diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2022-01-05 13:35:28 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-01-14 19:44:40 +0100 |
| commit | c60427dd50ba9b20063ccaed0e98d62e886d7a3b (patch) | |
| tree | 5555b7cc1f8a3e5946015a0262d478f5566e59d0 /arch/x86/include | |
| parent | kvm: x86: Add CPUID support for Intel AMX (diff) | |
| download | linux-c60427dd50ba9b20063ccaed0e98d62e886d7a3b.tar.xz linux-c60427dd50ba9b20063ccaed0e98d62e886d7a3b.zip | |
x86/fpu: Add uabi_size to guest_fpu
Userspace needs to inquire KVM about the buffer size to work
with the new KVM_SET_XSAVE and KVM_GET_XSAVE2. Add the size info
to guest_fpu for KVM to access.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20220105123532.12586-18-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/fpu/types.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/fpu/types.h b/arch/x86/include/asm/fpu/types.h index 3795d0573773..eb7cd1139d97 100644 --- a/arch/x86/include/asm/fpu/types.h +++ b/arch/x86/include/asm/fpu/types.h @@ -523,6 +523,11 @@ struct fpu_guest { u64 xfd_err; /* + * @uabi_size: Size required for save/restore + */ + unsigned int uabi_size; + + /* * @fpstate: Pointer to the allocated guest fpstate */ struct fpstate *fpstate; |