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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-28 10:52:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-28 10:52:05 -0700 |
| commit | 81250437a55044edf16d2cc484da4fb837489317 (patch) | |
| tree | 07f12a763928ed767fd39be4c6d35bfc28d30aea /arch/x86/xen/mmu.c | |
| parent | 75c5a52da3fc2a06abb6c6192bdf5d680e56d37d (diff) | |
| parent | 5926f87fdaad4be3ed10cec563bf357915e55a86 (diff) | |
| download | linux-81250437a55044edf16d2cc484da4fb837489317.tar.bz2 | |
Merge tag 'stable/for-linus-3.14-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen bugfixes from David Vrabel:
"Fix two bugs that cause x86 PV guest crashes.
1. Ballooning a 32-bit guest would eventually crash it.
2. Revert a broken fix for a regression with NUMA_BALACING. The bad
fix caused PV guests to crash after migration. This is not ideal
but unpicking the madness that is _PAGE_NUMA == _PAGE_PROTNONE will
take a while longer"
* tag 'stable/for-linus-3.14-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
Revert "xen: properly account for _PAGE_NUMA during xen pte translations"
xen/balloon: flush persistent kmaps in correct position
Diffstat (limited to 'arch/x86/xen/mmu.c')
| -rw-r--r-- | arch/x86/xen/mmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 256282e7888b..2423ef04ffea 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -365,7 +365,7 @@ void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, /* Assume pteval_t is equivalent to all the other *val_t types. */ static pteval_t pte_mfn_to_pfn(pteval_t val) { - if (pteval_present(val)) { + if (val & _PAGE_PRESENT) { unsigned long mfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT; unsigned long pfn = mfn_to_pfn(mfn); @@ -381,7 +381,7 @@ static pteval_t pte_mfn_to_pfn(pteval_t val) static pteval_t pte_pfn_to_mfn(pteval_t val) { - if (pteval_present(val)) { + if (val & _PAGE_PRESENT) { unsigned long pfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT; pteval_t flags = val & PTE_FLAGS_MASK; unsigned long mfn; |