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-rw-r--r--arch/x86/vdso/vdso32-setup.c11
1 files changed, 1 insertions, 10 deletions
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index cf058fecfcee..0bce5429a515 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -203,20 +203,11 @@ static struct page *vdso32_pages[1];
203 203
204#ifdef CONFIG_X86_64 204#ifdef CONFIG_X86_64
205 205
206static int use_sysenter __read_mostly = -1; 206#define vdso32_sysenter() (boot_cpu_has(X86_FEATURE_SYSENTER32))
207
208#define vdso32_sysenter() (use_sysenter > 0)
209 207
210/* May not be __init: called during resume */ 208/* May not be __init: called during resume */
211void syscall32_cpu_init(void) 209void syscall32_cpu_init(void)
212{ 210{
213 if (use_sysenter < 0) {
214 if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
215 use_sysenter = 1;
216 if (boot_cpu_data.x86_vendor == X86_VENDOR_CENTAUR)
217 use_sysenter = 1;
218 }
219
220 /* Load these always in case some future AMD CPU supports 211 /* Load these always in case some future AMD CPU supports
221 SYSENTER from compat mode too. */ 212 SYSENTER from compat mode too. */
222 checking_wrmsrl(MSR_IA32_SYSENTER_CS, (u64)__KERNEL_CS); 213 checking_wrmsrl(MSR_IA32_SYSENTER_CS, (u64)__KERNEL_CS);