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authorAvi Kivity <avi@qumranet.com>2007-01-05 19:36:38 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2007-01-06 02:55:23 -0500
commit399badf315bd4dd571b4b3b7cf666d9a2af40229 (patch)
tree5c84e0392454df650cb4ce25d6bfcb3bac843bc3 /drivers/net/sungem_phy.h
parentcb26b572dc39467ba0969d1a76c2f723d2d6a2a6 (diff)
[PATCH] KVM: Prevent stale bits in cr0 and cr4
Hardware virtualization implementations allow the guests to freely change some of the bits in cr0 and cr4, but trap when changing the other bits. This is useful to avoid excessive exits due to changing, for example, the ts flag. It also means the kvm's copy of cr0 and cr4 may be stale with respect to these bits. most of the time this doesn't matter as these bits are not very interesting. Other times, however (for example when returning cr0 to userspace), they are, so get the fresh contents of these bits from the guest by means of a new arch operation. Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/net/sungem_phy.h')
0 files changed, 0 insertions, 0 deletions