linux-kernel - [patch 2/8] x86/fpu: Cleanup fpu__init_system_xstate_size

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:   Fri, 15 Oct 2021 01:09:31 +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 2/8] x86/fpu: Cleanup fpu__init_system_xstate_size_legacy()

Clean the function up before making changes.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/fpu/init.c |   15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -199,17 +199,12 @@ static void __init fpu__init_system_xsta
 	 * Note that xstate sizes might be overwritten later during
 	 * fpu__init_system_xstate().
 	 */
-
-	if (!boot_cpu_has(X86_FEATURE_FPU)) {
+	if (!cpu_feature_enabled(X86_FEATURE_FPU))
 		fpu_kernel_xstate_size = sizeof(struct swregs_state);
-	} else {
-		if (boot_cpu_has(X86_FEATURE_FXSR))
-			fpu_kernel_xstate_size =
-				sizeof(struct fxregs_state);
-		else
-			fpu_kernel_xstate_size =
-				sizeof(struct fregs_state);
-	}
+	else if (cpu_feature_enabled(X86_FEATURE_FXSR))
+		fpu_kernel_xstate_size = sizeof(struct fxregs_state);
+	else
+		fpu_kernel_xstate_size = sizeof(struct fregs_state);
 
 	fpu_user_xstate_size = fpu_kernel_xstate_size;
 	fpstate_reset(&current->thread.fpu);