linux-kernel - [patch 18/21] x86/fpu: Use fpstate in fpu_copy_kvm_uabi_to

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 13 Oct 2021 16:55:52 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, "Chang S. Bae" <chang.seok.bae@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>
Subject: [patch 18/21] x86/fpu: Use fpstate in fpu_copy_kvm_uabi_to_fpstate()

Straight forward conversion. No functional change.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/fpu/core.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -205,7 +205,7 @@ EXPORT_SYMBOL_GPL(fpu_copy_fpstate_to_kv
 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
 			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);