From c36c3d7e5dc49f0085e26ee4bcd2cb6493b0120e Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Mon, 29 Jun 2026 08:05:01 +0200 Subject: [PATCH] x86/hygon: Stop using 32-bit MSR interfaces The 32-bit MSR interface rdmsr_safe()is planned to be removed. Use the related 64-bit variant instead. Signed-off-by: Juergen Gross Signed-off-by: Ingo Molnar Cc: Pu Wen Link: https://patch.msgid.link/20260629060526.3638272-11-jgross@suse.com --- arch/x86/kernel/cpu/hygon.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/hygon.c b/arch/x86/kernel/cpu/hygon.c index 3e8891a9caf2..ec51c2b9a257 100644 --- a/arch/x86/kernel/cpu/hygon.c +++ b/arch/x86/kernel/cpu/hygon.c @@ -125,11 +125,12 @@ static void bsp_init_hygon(struct cpuinfo_x86 *c) static void early_init_hygon(struct cpuinfo_x86 *c) { - u32 dummy; + u64 val; set_cpu_cap(c, X86_FEATURE_K8); - rdmsr_safe(MSR_AMD64_PATCH_LEVEL, &c->microcode, &dummy); + rdmsrq_safe(MSR_AMD64_PATCH_LEVEL, &val); + c->microcode = (u32)val; /* * c->x86_power is 8000_0007 edx. Bit 8 is TSC runs at constant rate