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Groups > linux.kernel > #1517535
| From | Radim Krčmář <rkrcmar@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 0/4] KVM: x86: emulate FXSAVE and FXRSTOR |
| Date | 2016-11-08 21:00 +0100 |
| Message-ID | <sBkIO-5kY-3@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
v2: http://www.spinics.net/lists/kvm/msg139681.html v3 brings compatibility with old compilers and has been compile-tested with GCC-4.4 on Debian Wheezy, GCC-4.4 on RHEL 6, and GCC-4.1 on RHEL 5. [4/4] still has the hidden assumption that guest and host CPUID match. Emulating a guest that does not deprecaste FCS and FDS on a host that does (a modern host) will not necessarily cause a problem, which is why patches don't handle the case. Enforcing the equality in CPUID update would be best, but another series could do that as Linux doesn't even have the CPUID bit defined yet. Radim Krčmář (4): KVM: x86: add Align16 instruction flag KVM: x86: save one bit in ctxt->d KVM: x86: add asm_safe wrapper KVM: x86: emulate FXSAVE and FXRSTOR arch/x86/kvm/emulate.c | 184 +++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 157 insertions(+), 27 deletions(-) -- 2.10.2
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[PATCH v3 0/4] KVM: x86: emulate FXSAVE and FXRSTOR Radim Krčmář <rkrcmar@redhat.com> - 2016-11-08 21:00 +0100
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