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| author | Heiko Carstens | 2013-11-18 10:35:55 +0100 |
|---|---|---|
| committer | Gleb Natapov | 2013-11-21 10:19:32 +0100 |
| commit | 8a3caa6d74597c2a083f7c87f866891a0b12540b (patch) | |
| tree | ee4cfd5a3787c0da3c8e84519ace12cc83461cf6 /arch/powerpc | |
| parent | kvm: mmu: delay mmu audit activation (diff) | |
| download | kernel-qcow2-linux-8a3caa6d74597c2a083f7c87f866891a0b12540b.tar.gz kernel-qcow2-linux-8a3caa6d74597c2a083f7c87f866891a0b12540b.tar.xz kernel-qcow2-linux-8a3caa6d74597c2a083f7c87f866891a0b12540b.zip | |
KVM: kvm_clear_guest_page(): fix empty_zero_page usage
Using the address of 'empty_zero_page' as source address in order to
clear a page is wrong. On some architectures empty_zero_page is only the
pointer to the struct page of the empty_zero_page. Therefore the clear
page operation would copy the contents of a couple of struct pages instead
of clearing a page. For kvm only arm/arm64 are affected by this bug.
To fix this use the ZERO_PAGE macro instead which will return the struct
page address of the empty_zero_page on all architectures.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch/powerpc')
0 files changed, 0 insertions, 0 deletions