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@@ -34,6 +34,7 @@
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/page-flags.h>
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+#include <linux/kernel-page-flags.h>
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#include <linux/sched.h>
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#include <linux/ksm.h>
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#include <linux/rmap.h>
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@@ -50,8 +51,12 @@ atomic_long_t mce_bad_pages __read_mostly = ATOMIC_LONG_INIT(0);
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u32 hwpoison_filter_dev_major = ~0U;
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u32 hwpoison_filter_dev_minor = ~0U;
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+u64 hwpoison_filter_flags_mask;
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+u64 hwpoison_filter_flags_value;
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EXPORT_SYMBOL_GPL(hwpoison_filter_dev_major);
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EXPORT_SYMBOL_GPL(hwpoison_filter_dev_minor);
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+EXPORT_SYMBOL_GPL(hwpoison_filter_flags_mask);
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+EXPORT_SYMBOL_GPL(hwpoison_filter_flags_value);
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static int hwpoison_filter_dev(struct page *p)
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{
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@@ -83,11 +88,26 @@ static int hwpoison_filter_dev(struct page *p)
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return 0;
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}
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+static int hwpoison_filter_flags(struct page *p)
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+{
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+ if (!hwpoison_filter_flags_mask)
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+ return 0;
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+
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+ if ((stable_page_flags(p) & hwpoison_filter_flags_mask) ==
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+ hwpoison_filter_flags_value)
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+ return 0;
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+ else
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+ return -EINVAL;
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+}
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+
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int hwpoison_filter(struct page *p)
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{
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if (hwpoison_filter_dev(p))
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return -EINVAL;
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+ if (hwpoison_filter_flags(p))
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+ return -EINVAL;
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+
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return 0;
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}
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EXPORT_SYMBOL_GPL(hwpoison_filter);
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