diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2022-01-05 04:35:28 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-01-14 13:44:40 -0500 |
| commit | c60427dd50ba9b20063ccaed0e98d62e886d7a3b (patch) | |
| tree | 5555b7cc1f8a3e5946015a0262d478f5566e59d0 /arch/x86/kernel/fpu/core.c | |
| parent | 690a757d610e50c2c3acd2e4bc3992cfc63feff2 (diff) | |
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/kernel/fpu/core.c')
| -rw-r--r-- | arch/x86/kernel/fpu/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 271fd5bc043b..de8e8c21f355 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -240,6 +240,7 @@ bool fpu_alloc_guest_fpstate(struct fpu_guest *gfpu) gfpu->fpstate = fpstate; gfpu->xfeatures = fpu_user_cfg.default_features; gfpu->perm = fpu_user_cfg.default_features; + gfpu->uabi_size = fpu_user_cfg.default_size; fpu_init_guest_permissions(gfpu); return true; |