KVM: MMU: add SPTE_HOST_WRITEABLE flag to the shadow ptes

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this flag notify that the host physical page we are pointing to from
the spte is write protected, and therefore we cant change its access
to be write unless we run get_user_pages(write = 1).

(this is needed for change_pte support in kvm)

Signed-off-by: Izik Eidus <ieidus@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Izik Eidus 2009-09-23 21:47:17 +03:00 • committed by Avi Kivity

parent acb66dd051

commit 1403283acc

2 changed files with 26 additions and 7 deletions

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15

arch/x86/kvm/mmu.c

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18

arch/x86/kvm/paging_tmpl.h

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