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Commit 6a9e9184 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
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xen: fix pinning when not using split pte locks 



We only pin PTE pages when using split PTE locks, so don't do the
pin/unpin when attaching/detaching pte pages to a pinned pagetable.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 3ce9bcb5

arch/x86/xen/enlighten.c

+2 −2
Original line number Diff line number Diff line
@@ -826,7 +826,7 @@ static void xen_alloc_ptpage(struct mm_struct *mm, u32 pfn, unsigned level) 


		if (!PageHighMem(page)) {

			make_lowmem_page_readonly(__va(PFN_PHYS((unsigned long)pfn)));

			if (level == PT_PTE)

			if (level == PT_PTE && USE_SPLIT_PTLOCKS)

				pin_pagetable_pfn(MMUEXT_PIN_L1_TABLE, pfn);

		} else

			/* make sure there are no stray mappings of
@@ -894,7 +894,7 @@ static void xen_release_ptpage(u32 pfn, unsigned level) 


	if (PagePinned(page)) {

		if (!PageHighMem(page)) {

			if (level == PT_PTE)

			if (level == PT_PTE && USE_SPLIT_PTLOCKS)

				pin_pagetable_pfn(MMUEXT_UNPIN_TABLE, pfn);

			make_lowmem_page_readwrite(__va(PFN_PHYS(pfn)));

		}