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@@ -6,7 +6,6 @@
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* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
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*/
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-
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/*
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* Cross Partition Communication (XPC) partition support.
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*
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@@ -16,7 +15,6 @@
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*
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*/
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-
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#include <linux/kernel.h>
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#include <linux/sysctl.h>
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#include <linux/cache.h>
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@@ -30,11 +28,9 @@
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#include <asm/sn/addrs.h>
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#include "xpc.h"
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-
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/* XPC is exiting flag */
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int xpc_exiting;
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-
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/* SH_IPI_ACCESS shub register value on startup */
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static u64 xpc_sh1_IPI_access;
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static u64 xpc_sh2_IPI_access0;
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@@ -42,11 +38,9 @@ static u64 xpc_sh2_IPI_access1;
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static u64 xpc_sh2_IPI_access2;
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static u64 xpc_sh2_IPI_access3;
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-
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/* original protection values for each node */
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u64 xpc_prot_vec[MAX_NUMNODES];
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-
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/* this partition's reserved page pointers */
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struct xpc_rsvd_page *xpc_rsvd_page;
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static u64 *xpc_part_nasids;
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@@ -57,7 +51,6 @@ struct xpc_vars_part *xpc_vars_part;
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static int xp_nasid_mask_bytes; /* actual size in bytes of nasid mask */
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static int xp_nasid_mask_words; /* actual size in words of nasid mask */
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-
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/*
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* For performance reasons, each entry of xpc_partitions[] is cacheline
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* aligned. And xpc_partitions[] is padded with an additional entry at the
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@@ -66,7 +59,6 @@ static int xp_nasid_mask_words; /* actual size in words of nasid mask */
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*/
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struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1];
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-
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/*
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* Generic buffer used to store a local copy of portions of a remote
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* partition's reserved page (either its header and part_nasids mask,
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@@ -75,7 +67,6 @@ struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1];
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char *xpc_remote_copy_buffer;
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void *xpc_remote_copy_buffer_base;
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-
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/*
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* Guarantee that the kmalloc'd memory is cacheline aligned.
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*/
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@@ -87,7 +78,7 @@ xpc_kmalloc_cacheline_aligned(size_t size, gfp_t flags, void **base)
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if (*base == NULL) {
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return NULL;
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}
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- if ((u64) *base == L1_CACHE_ALIGN((u64) *base)) {
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+ if ((u64)*base == L1_CACHE_ALIGN((u64)*base)) {
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return *base;
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}
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kfree(*base);
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@@ -97,10 +88,9 @@ xpc_kmalloc_cacheline_aligned(size_t size, gfp_t flags, void **base)
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if (*base == NULL) {
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return NULL;
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}
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- return (void *) L1_CACHE_ALIGN((u64) *base);
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+ return (void *)L1_CACHE_ALIGN((u64)*base);
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}
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-
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/*
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* Given a nasid, get the physical address of the partition's reserved page
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* for that nasid. This function returns 0 on any error.
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@@ -117,11 +107,10 @@ xpc_get_rsvd_page_pa(int nasid)
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u64 buf_len = 0;
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void *buf_base = NULL;
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-
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while (1) {
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status = sn_partition_reserved_page_pa(buf, &cookie, &rp_pa,
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- &len);
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+ &len);
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dev_dbg(xpc_part, "SAL returned with status=%li, cookie="
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"0x%016lx, address=0x%016lx, len=0x%016lx\n",
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@@ -134,8 +123,9 @@ xpc_get_rsvd_page_pa(int nasid)
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if (L1_CACHE_ALIGN(len) > buf_len) {
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kfree(buf_base);
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buf_len = L1_CACHE_ALIGN(len);
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- buf = (u64) xpc_kmalloc_cacheline_aligned(buf_len,
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- GFP_KERNEL, &buf_base);
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+ buf = (u64)xpc_kmalloc_cacheline_aligned(buf_len,
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+ GFP_KERNEL,
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+ &buf_base);
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if (buf_base == NULL) {
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dev_err(xpc_part, "unable to kmalloc "
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"len=0x%016lx\n", buf_len);
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@@ -145,7 +135,7 @@ xpc_get_rsvd_page_pa(int nasid)
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}
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bte_res = xp_bte_copy(rp_pa, buf, buf_len,
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- (BTE_NOTIFY | BTE_WACQUIRE), NULL);
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+ (BTE_NOTIFY | BTE_WACQUIRE), NULL);
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if (bte_res != BTE_SUCCESS) {
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dev_dbg(xpc_part, "xp_bte_copy failed %i\n", bte_res);
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status = SALRET_ERROR;
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@@ -162,7 +152,6 @@ xpc_get_rsvd_page_pa(int nasid)
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return rp_pa;
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}
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-
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/*
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* Fill the partition reserved page with the information needed by
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* other partitions to discover we are alive and establish initial
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@@ -176,7 +165,6 @@ xpc_rsvd_page_init(void)
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u64 rp_pa, nasid_array = 0;
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int i, ret;
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-
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/* get the local reserved page's address */
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preempt_disable();
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@@ -186,7 +174,7 @@ xpc_rsvd_page_init(void)
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dev_err(xpc_part, "SAL failed to locate the reserved page\n");
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return NULL;
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}
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- rp = (struct xpc_rsvd_page *) __va(rp_pa);
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+ rp = (struct xpc_rsvd_page *)__va(rp_pa);
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if (rp->partid != sn_partition_id) {
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dev_err(xpc_part, "the reserved page's partid of %d should be "
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@@ -223,7 +211,7 @@ xpc_rsvd_page_init(void)
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* memory protections are never restricted.
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*/
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if ((amos_page = xpc_vars->amos_page) == NULL) {
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- amos_page = (AMO_t *) TO_AMO(uncached_alloc_page(0));
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+ amos_page = (AMO_t *)TO_AMO(uncached_alloc_page(0));
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if (amos_page == NULL) {
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dev_err(xpc_part, "can't allocate page of AMOs\n");
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return NULL;
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@@ -234,30 +222,31 @@ xpc_rsvd_page_init(void)
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* when xpc_allow_IPI_ops() is called via xpc_hb_init().
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*/
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if (!enable_shub_wars_1_1()) {
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- ret = sn_change_memprotect(ia64_tpa((u64) amos_page),
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- PAGE_SIZE, SN_MEMPROT_ACCESS_CLASS_1,
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- &nasid_array);
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+ ret = sn_change_memprotect(ia64_tpa((u64)amos_page),
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+ PAGE_SIZE,
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+ SN_MEMPROT_ACCESS_CLASS_1,
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+ &nasid_array);
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if (ret != 0) {
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dev_err(xpc_part, "can't change memory "
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"protections\n");
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uncached_free_page(__IA64_UNCACHED_OFFSET |
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- TO_PHYS((u64) amos_page));
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+ TO_PHYS((u64)amos_page));
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return NULL;
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}
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}
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- } else if (!IS_AMO_ADDRESS((u64) amos_page)) {
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+ } else if (!IS_AMO_ADDRESS((u64)amos_page)) {
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/*
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* EFI's XPBOOT can also set amos_page in the reserved page,
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* but it happens to leave it as an uncached physical address
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* and we need it to be an uncached virtual, so we'll have to
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* convert it.
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*/
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- if (!IS_AMO_PHYS_ADDRESS((u64) amos_page)) {
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+ if (!IS_AMO_PHYS_ADDRESS((u64)amos_page)) {
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dev_err(xpc_part, "previously used amos_page address "
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- "is bad = 0x%p\n", (void *) amos_page);
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+ "is bad = 0x%p\n", (void *)amos_page);
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return NULL;
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}
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- amos_page = (AMO_t *) TO_AMO((u64) amos_page);
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+ amos_page = (AMO_t *)TO_AMO((u64)amos_page);
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}
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/* clear xpc_vars */
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@@ -267,22 +256,21 @@ xpc_rsvd_page_init(void)
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xpc_vars->act_nasid = cpuid_to_nasid(0);
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xpc_vars->act_phys_cpuid = cpu_physical_id(0);
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xpc_vars->vars_part_pa = __pa(xpc_vars_part);
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- xpc_vars->amos_page_pa = ia64_tpa((u64) amos_page);
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- xpc_vars->amos_page = amos_page; /* save for next load of XPC */
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-
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+ xpc_vars->amos_page_pa = ia64_tpa((u64)amos_page);
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+ xpc_vars->amos_page = amos_page; /* save for next load of XPC */
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/* clear xpc_vars_part */
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- memset((u64 *) xpc_vars_part, 0, sizeof(struct xpc_vars_part) *
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- XP_MAX_PARTITIONS);
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+ memset((u64 *)xpc_vars_part, 0, sizeof(struct xpc_vars_part) *
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+ XP_MAX_PARTITIONS);
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/* initialize the activate IRQ related AMO variables */
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for (i = 0; i < xp_nasid_mask_words; i++) {
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- (void) xpc_IPI_init(XPC_ACTIVATE_IRQ_AMOS + i);
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+ (void)xpc_IPI_init(XPC_ACTIVATE_IRQ_AMOS + i);
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}
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/* initialize the engaged remote partitions related AMO variables */
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- (void) xpc_IPI_init(XPC_ENGAGED_PARTITIONS_AMO);
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- (void) xpc_IPI_init(XPC_DISENGAGE_REQUEST_AMO);
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+ (void)xpc_IPI_init(XPC_ENGAGED_PARTITIONS_AMO);
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+ (void)xpc_IPI_init(XPC_DISENGAGE_REQUEST_AMO);
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/* timestamp of when reserved page was setup by XPC */
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rp->stamp = CURRENT_TIME;
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@@ -296,7 +284,6 @@ xpc_rsvd_page_init(void)
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return rp;
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}
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-
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/*
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* Change protections to allow IPI operations (and AMO operations on
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* Shub 1.1 systems).
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@@ -307,39 +294,38 @@ xpc_allow_IPI_ops(void)
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int node;
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int nasid;
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-
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// >>> Change SH_IPI_ACCESS code to use SAL call once it is available.
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if (is_shub2()) {
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xpc_sh2_IPI_access0 =
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- (u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS0));
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+ (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS0));
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xpc_sh2_IPI_access1 =
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- (u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS1));
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+ (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS1));
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xpc_sh2_IPI_access2 =
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- (u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS2));
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+ (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS2));
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xpc_sh2_IPI_access3 =
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- (u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS3));
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+ (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS3));
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for_each_online_node(node) {
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nasid = cnodeid_to_nasid(node);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
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- -1UL);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
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- -1UL);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
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- -1UL);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
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- -1UL);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
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+ -1UL);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
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+ -1UL);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
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+ -1UL);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
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+ -1UL);
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}
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} else {
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xpc_sh1_IPI_access =
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- (u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH1_IPI_ACCESS));
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+ (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH1_IPI_ACCESS));
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for_each_online_node(node) {
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nasid = cnodeid_to_nasid(node);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
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- -1UL);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
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+ -1UL);
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/*
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* Since the BIST collides with memory operations on
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@@ -347,21 +333,23 @@ xpc_allow_IPI_ops(void)
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*/
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if (enable_shub_wars_1_1()) {
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/* open up everything */
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- xpc_prot_vec[node] = (u64) HUB_L((u64 *)
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- GLOBAL_MMR_ADDR(nasid,
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- SH1_MD_DQLP_MMR_DIR_PRIVEC0));
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
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- SH1_MD_DQLP_MMR_DIR_PRIVEC0),
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- -1UL);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
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- SH1_MD_DQRP_MMR_DIR_PRIVEC0),
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- -1UL);
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+ xpc_prot_vec[node] = (u64)HUB_L((u64 *)
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+ GLOBAL_MMR_ADDR
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+ (nasid,
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+ SH1_MD_DQLP_MMR_DIR_PRIVEC0));
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+ HUB_S((u64 *)
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+ GLOBAL_MMR_ADDR(nasid,
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+ SH1_MD_DQLP_MMR_DIR_PRIVEC0),
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+ -1UL);
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+ HUB_S((u64 *)
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+ GLOBAL_MMR_ADDR(nasid,
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+ SH1_MD_DQRP_MMR_DIR_PRIVEC0),
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+ -1UL);
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}
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}
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}
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}
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-
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/*
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* Restrict protections to disallow IPI operations (and AMO operations on
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* Shub 1.1 systems).
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@@ -372,43 +360,41 @@ xpc_restrict_IPI_ops(void)
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int node;
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int nasid;
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-
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// >>> Change SH_IPI_ACCESS code to use SAL call once it is available.
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if (is_shub2()) {
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for_each_online_node(node) {
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nasid = cnodeid_to_nasid(node);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
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- xpc_sh2_IPI_access0);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
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- xpc_sh2_IPI_access1);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
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- xpc_sh2_IPI_access2);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
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- xpc_sh2_IPI_access3);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
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+ xpc_sh2_IPI_access0);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
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+ xpc_sh2_IPI_access1);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
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+ xpc_sh2_IPI_access2);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
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+ xpc_sh2_IPI_access3);
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}
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} else {
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for_each_online_node(node) {
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nasid = cnodeid_to_nasid(node);
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
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- xpc_sh1_IPI_access);
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+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
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+ xpc_sh1_IPI_access);
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if (enable_shub_wars_1_1()) {
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- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
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- SH1_MD_DQLP_MMR_DIR_PRIVEC0),
|
|
|
- xpc_prot_vec[node]);
|
|
|
- HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
|
|
|
- SH1_MD_DQRP_MMR_DIR_PRIVEC0),
|
|
|
- xpc_prot_vec[node]);
|
|
|
+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid,
|
|
|
+ SH1_MD_DQLP_MMR_DIR_PRIVEC0),
|
|
|
+ xpc_prot_vec[node]);
|
|
|
+ HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid,
|
|
|
+ SH1_MD_DQRP_MMR_DIR_PRIVEC0),
|
|
|
+ xpc_prot_vec[node]);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* At periodic intervals, scan through all active partitions and ensure
|
|
|
* their heartbeat is still active. If not, the partition is deactivated.
|
|
@@ -421,8 +407,7 @@ xpc_check_remote_hb(void)
|
|
|
partid_t partid;
|
|
|
bte_result_t bres;
|
|
|
|
|
|
-
|
|
|
- remote_vars = (struct xpc_vars *) xpc_remote_copy_buffer;
|
|
|
+ remote_vars = (struct xpc_vars *)xpc_remote_copy_buffer;
|
|
|
|
|
|
for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
|
|
|
|
|
@@ -437,18 +422,18 @@ xpc_check_remote_hb(void)
|
|
|
part = &xpc_partitions[partid];
|
|
|
|
|
|
if (part->act_state == XPC_P_INACTIVE ||
|
|
|
- part->act_state == XPC_P_DEACTIVATING) {
|
|
|
+ part->act_state == XPC_P_DEACTIVATING) {
|
|
|
continue;
|
|
|
}
|
|
|
|
|
|
/* pull the remote_hb cache line */
|
|
|
bres = xp_bte_copy(part->remote_vars_pa,
|
|
|
- (u64) remote_vars,
|
|
|
- XPC_RP_VARS_SIZE,
|
|
|
- (BTE_NOTIFY | BTE_WACQUIRE), NULL);
|
|
|
+ (u64)remote_vars,
|
|
|
+ XPC_RP_VARS_SIZE,
|
|
|
+ (BTE_NOTIFY | BTE_WACQUIRE), NULL);
|
|
|
if (bres != BTE_SUCCESS) {
|
|
|
XPC_DEACTIVATE_PARTITION(part,
|
|
|
- xpc_map_bte_errors(bres));
|
|
|
+ xpc_map_bte_errors(bres));
|
|
|
continue;
|
|
|
}
|
|
|
|
|
@@ -459,8 +444,8 @@ xpc_check_remote_hb(void)
|
|
|
remote_vars->heartbeating_to_mask);
|
|
|
|
|
|
if (((remote_vars->heartbeat == part->last_heartbeat) &&
|
|
|
- (remote_vars->heartbeat_offline == 0)) ||
|
|
|
- !xpc_hb_allowed(sn_partition_id, remote_vars)) {
|
|
|
+ (remote_vars->heartbeat_offline == 0)) ||
|
|
|
+ !xpc_hb_allowed(sn_partition_id, remote_vars)) {
|
|
|
|
|
|
XPC_DEACTIVATE_PARTITION(part, xpcNoHeartbeat);
|
|
|
continue;
|
|
@@ -470,7 +455,6 @@ xpc_check_remote_hb(void)
|
|
|
}
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* Get a copy of a portion of the remote partition's rsvd page.
|
|
|
*
|
|
@@ -480,11 +464,10 @@ xpc_check_remote_hb(void)
|
|
|
*/
|
|
|
static enum xpc_retval
|
|
|
xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
|
|
|
- struct xpc_rsvd_page *remote_rp, u64 *remote_rp_pa)
|
|
|
+ struct xpc_rsvd_page *remote_rp, u64 *remote_rp_pa)
|
|
|
{
|
|
|
int bres, i;
|
|
|
|
|
|
-
|
|
|
/* get the reserved page's physical address */
|
|
|
|
|
|
*remote_rp_pa = xpc_get_rsvd_page_pa(nasid);
|
|
@@ -492,30 +475,26 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
|
|
|
return xpcNoRsvdPageAddr;
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/* pull over the reserved page header and part_nasids mask */
|
|
|
- bres = xp_bte_copy(*remote_rp_pa, (u64) remote_rp,
|
|
|
- XPC_RP_HEADER_SIZE + xp_nasid_mask_bytes,
|
|
|
- (BTE_NOTIFY | BTE_WACQUIRE), NULL);
|
|
|
+ bres = xp_bte_copy(*remote_rp_pa, (u64)remote_rp,
|
|
|
+ XPC_RP_HEADER_SIZE + xp_nasid_mask_bytes,
|
|
|
+ (BTE_NOTIFY | BTE_WACQUIRE), NULL);
|
|
|
if (bres != BTE_SUCCESS) {
|
|
|
return xpc_map_bte_errors(bres);
|
|
|
}
|
|
|
|
|
|
-
|
|
|
if (discovered_nasids != NULL) {
|
|
|
u64 *remote_part_nasids = XPC_RP_PART_NASIDS(remote_rp);
|
|
|
|
|
|
-
|
|
|
for (i = 0; i < xp_nasid_mask_words; i++) {
|
|
|
discovered_nasids[i] |= remote_part_nasids[i];
|
|
|
}
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/* check that the partid is for another partition */
|
|
|
|
|
|
if (remote_rp->partid < 1 ||
|
|
|
- remote_rp->partid > (XP_MAX_PARTITIONS - 1)) {
|
|
|
+ remote_rp->partid > (XP_MAX_PARTITIONS - 1)) {
|
|
|
return xpcInvalidPartid;
|
|
|
}
|
|
|
|
|
@@ -523,16 +502,14 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
|
|
|
return xpcLocalPartid;
|
|
|
}
|
|
|
|
|
|
-
|
|
|
if (XPC_VERSION_MAJOR(remote_rp->version) !=
|
|
|
- XPC_VERSION_MAJOR(XPC_RP_VERSION)) {
|
|
|
+ XPC_VERSION_MAJOR(XPC_RP_VERSION)) {
|
|
|
return xpcBadVersion;
|
|
|
}
|
|
|
|
|
|
return xpcSuccess;
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* Get a copy of the remote partition's XPC variables from the reserved page.
|
|
|
*
|
|
@@ -544,34 +521,32 @@ xpc_get_remote_vars(u64 remote_vars_pa, struct xpc_vars *remote_vars)
|
|
|
{
|
|
|
int bres;
|
|
|
|
|
|
-
|
|
|
if (remote_vars_pa == 0) {
|
|
|
return xpcVarsNotSet;
|
|
|
}
|
|
|
|
|
|
/* pull over the cross partition variables */
|
|
|
- bres = xp_bte_copy(remote_vars_pa, (u64) remote_vars, XPC_RP_VARS_SIZE,
|
|
|
- (BTE_NOTIFY | BTE_WACQUIRE), NULL);
|
|
|
+ bres = xp_bte_copy(remote_vars_pa, (u64)remote_vars, XPC_RP_VARS_SIZE,
|
|
|
+ (BTE_NOTIFY | BTE_WACQUIRE), NULL);
|
|
|
if (bres != BTE_SUCCESS) {
|
|
|
return xpc_map_bte_errors(bres);
|
|
|
}
|
|
|
|
|
|
if (XPC_VERSION_MAJOR(remote_vars->version) !=
|
|
|
- XPC_VERSION_MAJOR(XPC_V_VERSION)) {
|
|
|
+ XPC_VERSION_MAJOR(XPC_V_VERSION)) {
|
|
|
return xpcBadVersion;
|
|
|
}
|
|
|
|
|
|
return xpcSuccess;
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* Update the remote partition's info.
|
|
|
*/
|
|
|
static void
|
|
|
xpc_update_partition_info(struct xpc_partition *part, u8 remote_rp_version,
|
|
|
- struct timespec *remote_rp_stamp, u64 remote_rp_pa,
|
|
|
- u64 remote_vars_pa, struct xpc_vars *remote_vars)
|
|
|
+ struct timespec *remote_rp_stamp, u64 remote_rp_pa,
|
|
|
+ u64 remote_vars_pa, struct xpc_vars *remote_vars)
|
|
|
{
|
|
|
part->remote_rp_version = remote_rp_version;
|
|
|
dev_dbg(xpc_part, " remote_rp_version = 0x%016x\n",
|
|
@@ -613,7 +588,6 @@ xpc_update_partition_info(struct xpc_partition *part, u8 remote_rp_version,
|
|
|
part->remote_vars_version);
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* Prior code has determined the nasid which generated an IPI. Inspect
|
|
|
* that nasid to determine if its partition needs to be activated or
|
|
@@ -643,15 +617,14 @@ xpc_identify_act_IRQ_req(int nasid)
|
|
|
struct xpc_partition *part;
|
|
|
enum xpc_retval ret;
|
|
|
|
|
|
-
|
|
|
/* pull over the reserved page structure */
|
|
|
|
|
|
- remote_rp = (struct xpc_rsvd_page *) xpc_remote_copy_buffer;
|
|
|
+ remote_rp = (struct xpc_rsvd_page *)xpc_remote_copy_buffer;
|
|
|
|
|
|
ret = xpc_get_remote_rp(nasid, NULL, remote_rp, &remote_rp_pa);
|
|
|
if (ret != xpcSuccess) {
|
|
|
dev_warn(xpc_part, "unable to get reserved page from nasid %d, "
|
|
|
- "which sent interrupt, reason=%d\n", nasid, ret);
|
|
|
+ "which sent interrupt, reason=%d\n", nasid, ret);
|
|
|
return;
|
|
|
}
|
|
|
|
|
@@ -663,34 +636,31 @@ xpc_identify_act_IRQ_req(int nasid)
|
|
|
partid = remote_rp->partid;
|
|
|
part = &xpc_partitions[partid];
|
|
|
|
|
|
-
|
|
|
/* pull over the cross partition variables */
|
|
|
|
|
|
- remote_vars = (struct xpc_vars *) xpc_remote_copy_buffer;
|
|
|
+ remote_vars = (struct xpc_vars *)xpc_remote_copy_buffer;
|
|
|
|
|
|
ret = xpc_get_remote_vars(remote_vars_pa, remote_vars);
|
|
|
if (ret != xpcSuccess) {
|
|
|
|
|
|
dev_warn(xpc_part, "unable to get XPC variables from nasid %d, "
|
|
|
- "which sent interrupt, reason=%d\n", nasid, ret);
|
|
|
+ "which sent interrupt, reason=%d\n", nasid, ret);
|
|
|
|
|
|
XPC_DEACTIVATE_PARTITION(part, ret);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
-
|
|
|
part->act_IRQ_rcvd++;
|
|
|
|
|
|
dev_dbg(xpc_part, "partid for nasid %d is %d; IRQs = %d; HB = "
|
|
|
- "%ld:0x%lx\n", (int) nasid, (int) partid, part->act_IRQ_rcvd,
|
|
|
+ "%ld:0x%lx\n", (int)nasid, (int)partid, part->act_IRQ_rcvd,
|
|
|
remote_vars->heartbeat, remote_vars->heartbeating_to_mask);
|
|
|
|
|
|
- if (xpc_partition_disengaged(part) &&
|
|
|
- part->act_state == XPC_P_INACTIVE) {
|
|
|
+ if (xpc_partition_disengaged(part) && part->act_state == XPC_P_INACTIVE) {
|
|
|
|
|
|
xpc_update_partition_info(part, remote_rp_version,
|
|
|
- &remote_rp_stamp, remote_rp_pa,
|
|
|
- remote_vars_pa, remote_vars);
|
|
|
+ &remote_rp_stamp, remote_rp_pa,
|
|
|
+ remote_vars_pa, remote_vars);
|
|
|
|
|
|
if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version)) {
|
|
|
if (xpc_partition_disengage_requested(1UL << partid)) {
|
|
@@ -714,16 +684,15 @@ xpc_identify_act_IRQ_req(int nasid)
|
|
|
|
|
|
if (!XPC_SUPPORTS_RP_STAMP(part->remote_rp_version)) {
|
|
|
DBUG_ON(XPC_SUPPORTS_DISENGAGE_REQUEST(part->
|
|
|
- remote_vars_version));
|
|
|
+ remote_vars_version));
|
|
|
|
|
|
if (!XPC_SUPPORTS_RP_STAMP(remote_rp_version)) {
|
|
|
DBUG_ON(XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars->
|
|
|
- version));
|
|
|
+ version));
|
|
|
/* see if the other side rebooted */
|
|
|
if (part->remote_amos_page_pa ==
|
|
|
- remote_vars->amos_page_pa &&
|
|
|
- xpc_hb_allowed(sn_partition_id,
|
|
|
- remote_vars)) {
|
|
|
+ remote_vars->amos_page_pa &&
|
|
|
+ xpc_hb_allowed(sn_partition_id, remote_vars)) {
|
|
|
/* doesn't look that way, so ignore the IPI */
|
|
|
return;
|
|
|
}
|
|
@@ -735,8 +704,8 @@ xpc_identify_act_IRQ_req(int nasid)
|
|
|
*/
|
|
|
|
|
|
xpc_update_partition_info(part, remote_rp_version,
|
|
|
- &remote_rp_stamp, remote_rp_pa,
|
|
|
- remote_vars_pa, remote_vars);
|
|
|
+ &remote_rp_stamp, remote_rp_pa,
|
|
|
+ remote_vars_pa, remote_vars);
|
|
|
part->reactivate_nasid = nasid;
|
|
|
XPC_DEACTIVATE_PARTITION(part, xpcReactivating);
|
|
|
return;
|
|
@@ -756,15 +725,15 @@ xpc_identify_act_IRQ_req(int nasid)
|
|
|
xpc_clear_partition_disengage_request(1UL << partid);
|
|
|
|
|
|
xpc_update_partition_info(part, remote_rp_version,
|
|
|
- &remote_rp_stamp, remote_rp_pa,
|
|
|
- remote_vars_pa, remote_vars);
|
|
|
+ &remote_rp_stamp, remote_rp_pa,
|
|
|
+ remote_vars_pa, remote_vars);
|
|
|
reactivate = 1;
|
|
|
|
|
|
} else {
|
|
|
DBUG_ON(!XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars->version));
|
|
|
|
|
|
stamp_diff = xpc_compare_stamps(&part->remote_rp_stamp,
|
|
|
- &remote_rp_stamp);
|
|
|
+ &remote_rp_stamp);
|
|
|
if (stamp_diff != 0) {
|
|
|
DBUG_ON(stamp_diff >= 0);
|
|
|
|
|
@@ -775,17 +744,18 @@ xpc_identify_act_IRQ_req(int nasid)
|
|
|
|
|
|
DBUG_ON(xpc_partition_engaged(1UL << partid));
|
|
|
DBUG_ON(xpc_partition_disengage_requested(1UL <<
|
|
|
- partid));
|
|
|
+ partid));
|
|
|
|
|
|
xpc_update_partition_info(part, remote_rp_version,
|
|
|
- &remote_rp_stamp, remote_rp_pa,
|
|
|
- remote_vars_pa, remote_vars);
|
|
|
+ &remote_rp_stamp,
|
|
|
+ remote_rp_pa, remote_vars_pa,
|
|
|
+ remote_vars);
|
|
|
reactivate = 1;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (part->disengage_request_timeout > 0 &&
|
|
|
- !xpc_partition_disengaged(part)) {
|
|
|
+ !xpc_partition_disengaged(part)) {
|
|
|
/* still waiting on other side to disengage from us */
|
|
|
return;
|
|
|
}
|
|
@@ -795,12 +765,11 @@ xpc_identify_act_IRQ_req(int nasid)
|
|
|
XPC_DEACTIVATE_PARTITION(part, xpcReactivating);
|
|
|
|
|
|
} else if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version) &&
|
|
|
- xpc_partition_disengage_requested(1UL << partid)) {
|
|
|
+ xpc_partition_disengage_requested(1UL << partid)) {
|
|
|
XPC_DEACTIVATE_PARTITION(part, xpcOtherGoingDown);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* Loop through the activation AMO variables and process any bits
|
|
|
* which are set. Each bit indicates a nasid sending a partition
|
|
@@ -813,14 +782,12 @@ xpc_identify_act_IRQ_sender(void)
|
|
|
{
|
|
|
int word, bit;
|
|
|
u64 nasid_mask;
|
|
|
- u64 nasid; /* remote nasid */
|
|
|
+ u64 nasid; /* remote nasid */
|
|
|
int n_IRQs_detected = 0;
|
|
|
AMO_t *act_amos;
|
|
|
|
|
|
-
|
|
|
act_amos = xpc_vars->amos_page + XPC_ACTIVATE_IRQ_AMOS;
|
|
|
|
|
|
-
|
|
|
/* scan through act AMO variable looking for non-zero entries */
|
|
|
for (word = 0; word < xp_nasid_mask_words; word++) {
|
|
|
|
|
@@ -837,7 +804,6 @@ xpc_identify_act_IRQ_sender(void)
|
|
|
dev_dbg(xpc_part, "AMO[%d] gave back 0x%lx\n", word,
|
|
|
nasid_mask);
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* If this nasid has been added to the machine since
|
|
|
* our partition was reset, this will retain the
|
|
@@ -846,7 +812,6 @@ xpc_identify_act_IRQ_sender(void)
|
|
|
*/
|
|
|
xpc_mach_nasids[word] |= nasid_mask;
|
|
|
|
|
|
-
|
|
|
/* locate the nasid(s) which sent interrupts */
|
|
|
|
|
|
for (bit = 0; bit < (8 * sizeof(u64)); bit++) {
|
|
@@ -862,7 +827,6 @@ xpc_identify_act_IRQ_sender(void)
|
|
|
return n_IRQs_detected;
|
|
|
}
|
|
|
|
|
|
-
|
|
|
/*
|
|
|
* See if the other side has responded to a partition disengage request
|
|
|
* from us.
|
|
@@ -873,7 +837,6 @@ xpc_partition_disengaged(struct xpc_partition *part)
|
|
|
partid_t partid = XPC_PARTID(part);
|
|
|
int disengaged;
|
|
|
|
|
|
-
|
|
|
disengaged = (xpc_partition_engaged(1UL << partid) == 0);
|
|
|
if (part->disengage_request_timeout) {
|
|
|
if (!disengaged) {
|
|
@@ -888,7 +851,7 @@ xpc_partition_disengaged(struct xpc_partition *part)
|
|
|
*/
|
|
|
|
|
|
dev_info(xpc_part, "disengage from remote partition %d "
|
|
|
- "timed out\n", partid);
|
|
|
+ "timed out\n", partid);
|
|
|
xpc_disengage_request_timedout = 1;
|
|
|
xpc_clear_partition_engaged(1UL << partid);
|
|
|
disengaged = 1;
|
|
@@ -898,11 +861,11 @@ xpc_partition_disengaged(struct xpc_partition *part)
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/* cancel the timer function, provided it's not us */
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if (!in_interrupt()) {
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del_singleshot_timer_sync(&part->
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- disengage_request_timer);
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+ disengage_request_timer);
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}
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DBUG_ON(part->act_state != XPC_P_DEACTIVATING &&
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- part->act_state != XPC_P_INACTIVE);
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+ part->act_state != XPC_P_INACTIVE);
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if (part->act_state != XPC_P_INACTIVE) {
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xpc_wakeup_channel_mgr(part);
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}
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@@ -914,7 +877,6 @@ xpc_partition_disengaged(struct xpc_partition *part)
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return disengaged;
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}
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-
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/*
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* Mark specified partition as active.
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*/
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@@ -924,7 +886,6 @@ xpc_mark_partition_active(struct xpc_partition *part)
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unsigned long irq_flags;
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enum xpc_retval ret;
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-
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dev_dbg(xpc_part, "setting partition %d to ACTIVE\n", XPC_PARTID(part));
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spin_lock_irqsave(&part->act_lock, irq_flags);
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@@ -940,17 +901,15 @@ xpc_mark_partition_active(struct xpc_partition *part)
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return ret;
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}
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-
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/*
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* Notify XPC that the partition is down.
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*/
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void
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xpc_deactivate_partition(const int line, struct xpc_partition *part,
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- enum xpc_retval reason)
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+ enum xpc_retval reason)
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{
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unsigned long irq_flags;
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-
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spin_lock_irqsave(&part->act_lock, irq_flags);
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if (part->act_state == XPC_P_INACTIVE) {
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@@ -964,7 +923,7 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
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}
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if (part->act_state == XPC_P_DEACTIVATING) {
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if ((part->reason == xpcUnloading && reason != xpcUnloading) ||
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- reason == xpcReactivating) {
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+ reason == xpcReactivating) {
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XPC_SET_REASON(part, reason, line);
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}
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spin_unlock_irqrestore(&part->act_lock, irq_flags);
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@@ -982,9 +941,9 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
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/* set a timelimit on the disengage request */
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part->disengage_request_timeout = jiffies +
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- (xpc_disengage_request_timelimit * HZ);
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+ (xpc_disengage_request_timelimit * HZ);
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part->disengage_request_timer.expires =
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- part->disengage_request_timeout;
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+ part->disengage_request_timeout;
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add_timer(&part->disengage_request_timer);
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}
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@@ -994,7 +953,6 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
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xpc_partition_going_down(part, reason);
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}
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-
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/*
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* Mark specified partition as inactive.
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*/
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@@ -1003,7 +961,6 @@ xpc_mark_partition_inactive(struct xpc_partition *part)
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{
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unsigned long irq_flags;
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-
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dev_dbg(xpc_part, "setting partition %d to INACTIVE\n",
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XPC_PARTID(part));
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@@ -1013,7 +970,6 @@ xpc_mark_partition_inactive(struct xpc_partition *part)
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part->remote_rp_pa = 0;
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}
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-
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/*
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* SAL has provided a partition and machine mask. The partition mask
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* contains a bit for each even nasid in our partition. The machine
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@@ -1041,24 +997,22 @@ xpc_discovery(void)
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u64 *discovered_nasids;
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enum xpc_retval ret;
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-
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remote_rp = xpc_kmalloc_cacheline_aligned(XPC_RP_HEADER_SIZE +
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- xp_nasid_mask_bytes,
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- GFP_KERNEL, &remote_rp_base);
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+ xp_nasid_mask_bytes,
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+ GFP_KERNEL, &remote_rp_base);
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if (remote_rp == NULL) {
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return;
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}
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- remote_vars = (struct xpc_vars *) remote_rp;
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-
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+ remote_vars = (struct xpc_vars *)remote_rp;
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discovered_nasids = kzalloc(sizeof(u64) * xp_nasid_mask_words,
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- GFP_KERNEL);
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+ GFP_KERNEL);
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if (discovered_nasids == NULL) {
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kfree(remote_rp_base);
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return;
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}
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- rp = (struct xpc_rsvd_page *) xpc_rsvd_page;
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+ rp = (struct xpc_rsvd_page *)xpc_rsvd_page;
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/*
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* The term 'region' in this context refers to the minimum number of
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@@ -1081,23 +1035,21 @@ xpc_discovery(void)
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for (region = 0; region < max_regions; region++) {
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- if ((volatile int) xpc_exiting) {
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+ if ((volatile int)xpc_exiting) {
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break;
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}
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dev_dbg(xpc_part, "searching region %d\n", region);
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for (nasid = (region * region_size * 2);
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- nasid < ((region + 1) * region_size * 2);
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- nasid += 2) {
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+ nasid < ((region + 1) * region_size * 2); nasid += 2) {
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- if ((volatile int) xpc_exiting) {
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+ if ((volatile int)xpc_exiting) {
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break;
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}
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dev_dbg(xpc_part, "checking nasid %d\n", nasid);
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-
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if (XPC_NASID_IN_ARRAY(nasid, xpc_part_nasids)) {
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dev_dbg(xpc_part, "PROM indicates Nasid %d is "
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"part of the local partition; skipping "
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@@ -1119,11 +1071,10 @@ xpc_discovery(void)
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continue;
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}
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-
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/* pull over the reserved page structure */
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ret = xpc_get_remote_rp(nasid, discovered_nasids,
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- remote_rp, &remote_rp_pa);
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+ remote_rp, &remote_rp_pa);
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if (ret != xpcSuccess) {
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dev_dbg(xpc_part, "unable to get reserved page "
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"from nasid %d, reason=%d\n", nasid,
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@@ -1140,7 +1091,6 @@ xpc_discovery(void)
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partid = remote_rp->partid;
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part = &xpc_partitions[partid];
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-
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/* pull over the cross partition variables */
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ret = xpc_get_remote_vars(remote_vars_pa, remote_vars);
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@@ -1171,15 +1121,15 @@ xpc_discovery(void)
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* get the same page for remote_act_amos_pa after
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* module reloads and system reboots.
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*/
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- if (sn_register_xp_addr_region(
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- remote_vars->amos_page_pa,
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- PAGE_SIZE, 1) < 0) {
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- dev_dbg(xpc_part, "partition %d failed to "
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+ if (sn_register_xp_addr_region
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+ (remote_vars->amos_page_pa, PAGE_SIZE, 1) < 0) {
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+ dev_dbg(xpc_part,
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+ "partition %d failed to "
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"register xp_addr region 0x%016lx\n",
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partid, remote_vars->amos_page_pa);
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XPC_SET_REASON(part, xpcPhysAddrRegFailed,
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- __LINE__);
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+ __LINE__);
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break;
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}
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@@ -1195,9 +1145,9 @@ xpc_discovery(void)
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remote_vars->act_phys_cpuid);
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if (XPC_SUPPORTS_DISENGAGE_REQUEST(remote_vars->
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- version)) {
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+ version)) {
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part->remote_amos_page_pa =
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- remote_vars->amos_page_pa;
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+ remote_vars->amos_page_pa;
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xpc_mark_partition_disengaged(part);
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xpc_cancel_partition_disengage_request(part);
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}
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@@ -1209,7 +1159,6 @@ xpc_discovery(void)
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kfree(remote_rp_base);
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}
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-
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/*
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* Given a partid, get the nasids owned by that partition from the
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* remote partition's reserved page.
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@@ -1221,7 +1170,6 @@ xpc_initiate_partid_to_nasids(partid_t partid, void *nasid_mask)
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u64 part_nasid_pa;
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int bte_res;
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-
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part = &xpc_partitions[partid];
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if (part->remote_rp_pa == 0) {
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return xpcPartitionDown;
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@@ -1229,11 +1177,11 @@ xpc_initiate_partid_to_nasids(partid_t partid, void *nasid_mask)
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memset(nasid_mask, 0, XP_NASID_MASK_BYTES);
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- part_nasid_pa = (u64) XPC_RP_PART_NASIDS(part->remote_rp_pa);
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+ part_nasid_pa = (u64)XPC_RP_PART_NASIDS(part->remote_rp_pa);
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- bte_res = xp_bte_copy(part_nasid_pa, (u64) nasid_mask,
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- xp_nasid_mask_bytes, (BTE_NOTIFY | BTE_WACQUIRE), NULL);
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+ bte_res = xp_bte_copy(part_nasid_pa, (u64)nasid_mask,
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+ xp_nasid_mask_bytes, (BTE_NOTIFY | BTE_WACQUIRE),
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+ NULL);
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return xpc_map_bte_errors(bte_res);
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}
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-
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