David, Are you still working on v2 of these series? I was going to test and review. Thanks
> -----Original Message----- > From: David Edmondson <d...@dme.org> > Sent: Tuesday, June 8, 2021 3:25 AM > To: qemu-devel@nongnu.org > Cc: k...@vger.kernel.org; Eduardo Habkost <ehabk...@redhat.com>; Paolo > Bonzini <pbonz...@redhat.com>; Marcelo Tosatti <mtosa...@redhat.com>; > Richard Henderson <richard.hender...@linaro.org>; Moger, Babu > <babu.mo...@amd.com> > Subject: Re: [RFC PATCH 0/7] Support protection keys in an AMD EPYC-Milan > VM > > On Thursday, 2021-05-20 at 15:56:40 +01, David Edmondson wrote: > > > AMD EPYC-Milan CPUs introduced support for protection keys, previously > > available only with Intel CPUs. > > > > AMD chose to place the XSAVE state component for the protection keys > > at a different offset in the XSAVE state area than that chosen by > > Intel. > > > > To accommodate this, modify QEMU to behave appropriately on AMD > > systems, allowing a VM to properly take advantage of the new feature. > > > > Further, avoid manipulating XSAVE state components that are not > > present on AMD systems. > > > > The code in patch 6 that changes the CPUID 0x0d leaf is mostly dumped > > somewhere that seemed to work - I'm not sure where it really belongs. > > Ping - any thoughts about this approach? > > > David Edmondson (7): > > target/i386: Declare constants for XSAVE offsets > > target/i386: Use constants for XSAVE offsets > > target/i386: Clarify the padding requirements of X86XSaveArea > > target/i386: Prepare for per-vendor X86XSaveArea layout > > target/i386: Introduce AMD X86XSaveArea sub-union > > target/i386: Adjust AMD XSAVE PKRU area offset in CPUID leaf 0xd > > target/i386: Manipulate only AMD XSAVE state on AMD > > > > target/i386/cpu.c | 19 +++++---- > > target/i386/cpu.h | 80 ++++++++++++++++++++++++++++-------- > > target/i386/kvm/kvm.c | 57 +++++++++---------------- > > target/i386/tcg/fpu_helper.c | 20 ++++++--- > > target/i386/xsave_helper.c | 70 +++++++++++++++++++------------ > > 5 files changed, 152 insertions(+), 94 deletions(-) > > > > -- > > 2.30.2 > > dme. > -- > You know your green from your red.
