linux-kernel - [PATCH v3 05/74] x86/cpu/vfm: Update arch/x86/crypto/twofish_glue

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Date: Tue, 16 Apr 2024 14:19:07 -0700
From: Tony Luck <tony.luck@...el.com>
To: Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org,
	linux-kernel@...r.kernel.org,
	patches@...ts.linux.dev,
	Tony Luck <tony.luck@...el.com>
Subject: [PATCH v3 05/74] x86/cpu/vfm: Update arch/x86/crypto/twofish_glue_3way.c

New CPU #defines encode vendor and family as well as model.

Signed-off-by: Tony Luck <tony.luck@...el.com>
---
 arch/x86/crypto/twofish_glue_3way.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/crypto/twofish_glue_3way.c b/arch/x86/crypto/twofish_glue_3way.c
index 90454cf18e0d..82311249048f 100644
--- a/arch/x86/crypto/twofish_glue_3way.c
+++ b/arch/x86/crypto/twofish_glue_3way.c
@@ -12,6 +12,8 @@
 #include <linux/module.h>
 #include <linux/types.h>
 
+#include <asm/cpu_device_id.h>
+
 #include "twofish.h"
 #include "ecb_cbc_helpers.h"
 
@@ -107,10 +109,10 @@ static bool is_blacklisted_cpu(void)
 	if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
 		return false;
 
-	if (boot_cpu_data.x86 == 0x06 &&
-		(boot_cpu_data.x86_model == 0x1c ||
-		 boot_cpu_data.x86_model == 0x26 ||
-		 boot_cpu_data.x86_model == 0x36)) {
+	switch (boot_cpu_data.x86_vfm) {
+	case INTEL_ATOM_BONNELL:
+	case INTEL_ATOM_BONNELL_MID:
+	case INTEL_ATOM_SALTWELL:
 		/*
 		 * On Atom, twofish-3way is slower than original assembler
 		 * implementation. Twofish-3way trades off some performance in
-- 
2.44.0