KVM: Avoid checking huge page mappings in get_dirty_log()

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Dropped such mappings when we enabled dirty logging and we will never
create new ones until we stop the logging.

For this we introduce a new function which can be used to write protect
a range of PT level pages: although we do not need to care about a range
of pages at this point, the following patch will need this feature to
optimize the write protection of many pages.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Takuya Yoshikawa 2012-03-01 19:32:16 +09:00 • committed by Avi Kivity

parent a0ed46073c

commit 5dc99b2380

3 changed files with 36 additions and 17 deletions

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5

arch/x86/include/asm/kvm_host.h

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42

arch/x86/kvm/mmu.c

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8

arch/x86/kvm/x86.c

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