I'm announcing the release of the 4.9.122 kernel.
All x86 users of the 4.9 kernel series must upgrade.
The updated 4.9.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.9.y and can be browsed at the normal kernel.org git web browser: http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git%3Ba=summar...
thanks,
greg k-h
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Makefile | 2 +- arch/x86/include/asm/pgtable-invert.h | 11 ++++++++++- 2 files changed, 11 insertions(+), 2 deletions(-)
Greg Kroah-Hartman (1): Linux 4.9.122
Sean Christopherson (1): x86/speculation/l1tf: Exempt zeroed PTEs from inversion
diff --git a/Makefile b/Makefile index e54a126841a9..1f44343a1e04 100644 --- a/Makefile +++ b/Makefile @@ -1,6 +1,6 @@ VERSION = 4 PATCHLEVEL = 9 -SUBLEVEL = 121 +SUBLEVEL = 122 EXTRAVERSION = NAME = Roaring Lionus
diff --git a/arch/x86/include/asm/pgtable-invert.h b/arch/x86/include/asm/pgtable-invert.h index 44b1203ece12..a0c1525f1b6f 100644 --- a/arch/x86/include/asm/pgtable-invert.h +++ b/arch/x86/include/asm/pgtable-invert.h @@ -4,9 +4,18 @@
#ifndef __ASSEMBLY__
+/* + * A clear pte value is special, and doesn't get inverted. + * + * Note that even users that only pass a pgprot_t (rather + * than a full pte) won't trigger the special zero case, + * because even PAGE_NONE has _PAGE_PROTNONE | _PAGE_ACCESSED + * set. So the all zero case really is limited to just the + * cleared page table entry case. + */ static inline bool __pte_needs_invert(u64 val) { - return !(val & _PAGE_PRESENT); + return val && !(val & _PAGE_PRESENT); }
/* Get a mask to xor with the page table entry to get the correct pfn. */
linux-stable-mirror@lists.linaro.org
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Greg KH