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Peter Anvin" , "Rafael J . Wysocki" , Len Brown , Andy Lutomirski , Viresh Kumar , Fenghua Yu , Jean Delvare , Guenter Roeck , Sohil Mehta , Zhang Rui , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-hwmon@vger.kernel.org Subject: [RFC PATCH 09/15] x86/cpu/intel: Replace family 15 checks with VFM ones Date: Fri, 20 Dec 2024 21:37:04 +0000 Message-ID: <20241220213711.1892696-10-sohil.mehta@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241220213711.1892696-1-sohil.mehta@intel.com> References: <20241220213711.1892696-1-sohil.mehta@intel.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Introduce names for some old pentium 4 models and replace with VFM based checks. Signed-off-by: Sohil Mehta --- arch/x86/include/asm/intel-family.h | 4 ++++ arch/x86/kernel/cpu/intel.c | 6 +++--- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h index 41278093bcd4..79cfd42c849f 100644 --- a/arch/x86/include/asm/intel-family.h +++ b/arch/x86/include/asm/intel-family.h @@ -182,6 +182,10 @@ /* Family 5 */ #define INTEL_QUARK_X1000 IFM(5, 0x09) /* Quark X1000 SoC */ +/* Family 15 */ +#define INTEL_P4_WILLAMETTE IFM(15, 0x01) /* Also Xeon Foster */ +#define INTEL_P4_PRESCOTT IFM(15, 0x03) + /* Family 19 */ #define INTEL_PANTHERCOVE_X IFM(19, 0x01) /* Diamond Rapids */ diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index cde8f45ccd57..26221f38db70 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -256,8 +256,8 @@ static void early_init_intel(struct cpuinfo_x86 *c) #endif /* CPUID workaround for 0F33/0F34 CPU */ - if (c->x86 == 0xF && c->x86_model == 0x3 - && (c->x86_stepping == 0x3 || c->x86_stepping == 0x4)) + if (c->x86_vfm == INTEL_P4_PRESCOTT && + (c->x86_stepping == 0x3 || c->x86_stepping == 0x4)) c->x86_phys_bits = 36; /* @@ -430,7 +430,7 @@ static void intel_workarounds(struct cpuinfo_x86 *c) * P4 Xeon erratum 037 workaround. * Hardware prefetcher may cause stale data to be loaded into the cache. */ - if ((c->x86 == 15) && (c->x86_model == 1) && (c->x86_stepping == 1)) { + if (c->x86_vfm == INTEL_P4_WILLAMETTE && c->x86_stepping == 1) { if (msr_set_bit(MSR_IA32_MISC_ENABLE, MSR_IA32_MISC_ENABLE_PREFETCH_DISABLE_BIT) > 0) { pr_info("CPU: C0 stepping P4 Xeon detected.\n");