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x86/fpu: Use fpstate in fpu_copy_kvm_uabi_to_fpstate()

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Straight forward conversion. No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211013145323.129699950@linutronix.de
This commit is contained in:
Thomas Gleixner 2021-10-13 16:55:52 +02:00 committed by Borislav Petkov
parent 0b2d39aa03
commit ad6ede407a
1 changed files with 6 additions and 6 deletions
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12
arch/x86/kernel/fpu/core.c
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@ -205,7 +205,7 @@ EXPORT_SYMBOL_GPL(fpu_copy_fpstate_to_kvm_uabi);
int fpu_copy_kvm_uabi_to_fpstate(struct fpu *fpu, const void *buf, u64 xcr0,
u32 *vpkru)
{
union fpregs_state *kstate = &fpu->fpstate->regs;
struct fpstate *kstate = fpu->fpstate;
const union fpregs_state *ustate = buf;
struct pkru_state *xpkru;
int ret;
@ -215,25 +215,25 @@ int fpu_copy_kvm_uabi_to_fpstate(struct fpu *fpu, const void *buf, u64 xcr0,
return -EINVAL;
if (ustate->fxsave.mxcsr & ~mxcsr_feature_mask)
return -EINVAL;
memcpy(&kstate->fxsave, &ustate->fxsave, sizeof(ustate->fxsave));
memcpy(&kstate->regs.fxsave, &ustate->fxsave, sizeof(ustate->fxsave));
return 0;
}
if (ustate->xsave.header.xfeatures & ~xcr0)
return -EINVAL;
ret = copy_uabi_from_kernel_to_xstate(&kstate->xsave, ustate);
ret = copy_uabi_from_kernel_to_xstate(&kstate->regs.xsave, ustate);
if (ret)
return ret;
/* Retrieve PKRU if not in init state */
if (kstate->xsave.header.xfeatures & XFEATURE_MASK_PKRU) {
xpkru = get_xsave_addr(&kstate->xsave, XFEATURE_PKRU);
if (kstate->regs.xsave.header.xfeatures & XFEATURE_MASK_PKRU) {
xpkru = get_xsave_addr(&kstate->regs.xsave, XFEATURE_PKRU);
*vpkru = xpkru->pkru;
}
/* Ensure that XCOMP_BV is set up for XSAVES */
xstate_init_xcomp_bv(&kstate->xsave, xfeatures_mask_uabi());
xstate_init_xcomp_bv(&kstate->regs.xsave, xfeatures_mask_uabi());
return 0;
}
EXPORT_SYMBOL_GPL(fpu_copy_kvm_uabi_to_fpstate);