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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-11-21 19:05:07 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-12-05 13:57:05 +0100 |
| commit | df1daba7d1cb8ed7957f873cde5c9e953cbaa483 (patch) | |
| tree | 7779c9c8d78cbe289779c22f1e0d04ee0a49afa0 /arch/x86/kvm/cpuid.c | |
| parent | x86: export get_xsave_addr (diff) | |
| download | linux-df1daba7d1cb8ed7957f873cde5c9e953cbaa483.tar.xz linux-df1daba7d1cb8ed7957f873cde5c9e953cbaa483.zip | |
KVM: x86: support XSAVES usage in the host
Userspace is expecting non-compacted format for KVM_GET_XSAVE, but
struct xsave_struct might be using the compacted format. Convert
in order to preserve userspace ABI.
Likewise, userspace is passing non-compacted format for KVM_SET_XSAVE
but the kernel will pass it to XRSTORS, and we need to convert back.
Fixes: f31a9f7c71691569359fa7fb8b0acaa44bce0324
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: stable@vger.kernel.org
Cc: H. Peter Anvin <hpa@linux.intel.com>
Tested-by: Nadav Amit <namit@cs.technion.ac.il>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/cpuid.c')
0 files changed, 0 insertions, 0 deletions