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| author |   Sean Christopherson <seanjc@google.com> | 2021-05-04 15:56:32 -0700 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2021-05-05 21:50:14 +0200 |
| commit | fc48a6d1faadbf08b7a840d58a5a6eb85bd1a79a (patch) | |
| tree | a3e82d273054dfc33f67fec9fb149adcae10c97d /arch | |
| parent | x86/cpu: Initialize MSR_TSC_AUX if RDTSCP *or* RDPID is supported (diff) | |
| download | linux-dev-fc48a6d1faadbf08b7a840d58a5a6eb85bd1a79a.tar.xz linux-dev-fc48a6d1faadbf08b7a840d58a5a6eb85bd1a79a.zip | |
x86/cpu: Remove write_tsc() and write_rdtscp_aux() wrappers
Drop write_tsc() and write_rdtscp_aux(); the former has no users, and the
latter has only a single user and is slightly misleading since the only
in-kernel consumer of MSR_TSC_AUX is RDPID, not RDTSCP.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210504225632.1532621-3-seanjc@google.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/msr.h | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 2 |
2 files changed, 1 insertions, 5 deletions
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index e16cccdd0420..a3f87f1015d3 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -324,10 +324,6 @@ static inline int wrmsrl_safe(u32 msr, u64 val) return wrmsr_safe(msr, (u32)val, (u32)(val >> 32)); } -#define write_tsc(low, high) wrmsr(MSR_IA32_TSC, (low), (high)) - -#define write_rdtscp_aux(val) wrmsr(MSR_TSC_AUX, (val), 0) - struct msr *msrs_alloc(void); void msrs_free(struct msr *msrs); int msr_set_bit(u32 msr, u8 bit); diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 490bed07fe35..a1b756c49a93 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1852,7 +1852,7 @@ static inline void setup_getcpu(int cpu) struct desc_struct d = { }; if (boot_cpu_has(X86_FEATURE_RDTSCP) || boot_cpu_has(X86_FEATURE_RDPID)) - write_rdtscp_aux(cpudata); + wrmsr(MSR_TSC_AUX, cpudata, 0); /* Store CPU and node number in limit. */ d.limit0 = cpudata; |