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Subject[PATCH v2 08/14] x86/fault: Skip erratum #93 workaround on new CPUs
Date
Erratum #93 applies to the first generation of AMD K8 CPUs.  Skip the
workaround on newer CPUs.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
---
arch/x86/mm/fault.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index cbb1a9754473..3fe2f4800b69 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -442,9 +442,8 @@ static void dump_pagetable(unsigned long address)
*/
static int is_errata93(struct pt_regs *regs, unsigned long address)
{
-#if defined(CONFIG_X86_64) && defined(CONFIG_CPU_SUP_AMD)
- if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD
- || boot_cpu_data.x86 != 0xf)
+#if defined(CONFIG_X86_64)
+ if (!is_amd_k8_pre_npt())
return 0;

if (user_mode(regs))
--
2.29.2
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