[PATCH v7 028/120] x86/cpu: Use parsed CPUID(0x2)

"Ahmed S. Darwish" <[email protected]> Thu, 28 May 2026 17:37:50 +0200
Newsgroups dev.linux.lists.x86-cpuid,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
For Intel TLB detection, use parsed CPUID(0x2) instead of a direct CPUID
query.

Remove the maximum CPUID level check since the CPUID API's NULL check is
equivalent.

Signed-off-by: Ahmed S. Darwish <[email protected]>
---
 arch/x86/kernel/cpu/intel.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index f28c0efb7c8f..4d190dd64e95 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -709,14 +709,14 @@ static void intel_tlb_lookup(const struct leaf_0x2_table *desc)
 static void intel_detect_tlb(struct cpuinfo_x86 *c)
 {
 	const struct leaf_0x2_table *desc;
-	union leaf_0x2_regs regs;
-	u8 *ptr;
+	const struct cpuid_regs *regs;
+	const u8 *ptr;
 
-	if (c->cpuid_level < 2)
+	regs = cpuid_leaf_raw(c, 0x2);
+	if (!regs)
 		return;
 
-	cpuid_leaf_0x2(&regs);
-	for_each_cpuid_0x2_desc(regs, ptr, desc)
+	for_each_parsed_cpuid_0x2_desc(regs, ptr, desc)
 		intel_tlb_lookup(desc);
 }
 
-- 
2.54.0