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swh:1:snp:32555a3fd8878f019c2ebd6c964bc1edcaeff337
Revision 69325a122580d3a7b26589e8efdd6663001c3297 authored by Avi Kivity on 27 May 2010, 11:35:58 UTC, committed by Avi Kivity on 09 June 2010, 15:48:37 UTC 
KVM: MMU: Remove user access when allowing kernel access to gpte.w=0 page
 
If cr0.wp=0, we have to allow the guest kernel access to a page with pte.w=0.
We do that by setting spte.w=1, since the host cr0.wp must remain set so the
host can write protect pages.  Once we allow write access, we must remove
user access otherwise we mistakenly allow the user to write the page.

Reviewed-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
1 parent 3be2264
History
Tip revision: ffb4d94b4314655cea60ab7962756e6bab72fc7e authored by Linus Torvalds on 30 September 2022, 23:25:52 UTC
Merge tag 'drm-fixes-2022-10-01' of git://anongit.freedesktop.org/drm/drm
Tip revision: ffb4d94
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