diff options
Diffstat (limited to 'arch/x86/kernel/verify_cpu.S')
| -rw-r--r-- | arch/x86/kernel/verify_cpu.S | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/x86/kernel/verify_cpu.S b/arch/x86/kernel/verify_cpu.S index 3d3c2f71f617..37ad43792452 100644 --- a/arch/x86/kernel/verify_cpu.S +++ b/arch/x86/kernel/verify_cpu.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * * verify_cpu.S - Code for cpu long mode and SSE verification. This @@ -9,9 +10,6 @@ * Copyright (c) 2007 Vivek Goyal (vgoyal@in.ibm.com) * Copyright (c) 2010 Kees Cook (kees.cook@canonical.com) * - * This source code is licensed under the GNU General Public License, - * Version 2. See the file COPYING for more details. - * * This is a common code for verification whether CPU supports * long mode and SSE or not. It is not called directly instead this * file is included at various places and compiled in that context. @@ -31,9 +29,13 @@ */ #include <asm/cpufeatures.h> +#include <asm/cpufeaturemasks.h> #include <asm/msr-index.h> -ENTRY(verify_cpu) +#define SSE_MASK \ + (REQUIRED_MASK0 & ((1<<(X86_FEATURE_XMM & 31)) | (1<<(X86_FEATURE_XMM2 & 31)))) + +SYM_FUNC_START_LOCAL(verify_cpu) pushf # Save caller passed flags push $0 # Kill any dangerous flags popf @@ -134,9 +136,9 @@ ENTRY(verify_cpu) .Lverify_cpu_no_longmode: popf # Restore caller passed flags movl $1,%eax - ret + RET .Lverify_cpu_sse_ok: popf # Restore caller passed flags xorl %eax, %eax - ret -ENDPROC(verify_cpu) + RET +SYM_FUNC_END(verify_cpu) |