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Subject[PATCH] x86/acrn: Set X86_FEATURE_TSC_KNOWN_FREQ
Date
Avoiding recalibration by setting X86_FEATURE_TSC_KNOWN_FREQ.
This patch also removes `inline` for acrn_get_tsc_khz() since
it doesn't make sense.

Signed-off-by: Fei Li <fei1.li@intel.com>
Reviewed-by: Yin, Fengwei <fengwei.yin@intel.com>
---
arch/x86/include/asm/acrn.h | 5 -----
arch/x86/kernel/cpu/acrn.c | 6 ++++++
2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/acrn.h b/arch/x86/include/asm/acrn.h
index 1dd14381bcb6..aa12c74ea959 100644
--- a/arch/x86/include/asm/acrn.h
+++ b/arch/x86/include/asm/acrn.h
@@ -30,11 +30,6 @@ static inline u32 acrn_cpuid_base(void)
return 0;
}

-static inline unsigned long acrn_get_tsc_khz(void)
-{
- return cpuid_eax(ACRN_CPUID_TIMING_INFO);
-}
-
/*
* Hypercalls for ACRN
*
diff --git a/arch/x86/kernel/cpu/acrn.c b/arch/x86/kernel/cpu/acrn.c
index 485441b7f030..c5ff75b6a949 100644
--- a/arch/x86/kernel/cpu/acrn.c
+++ b/arch/x86/kernel/cpu/acrn.c
@@ -24,6 +24,12 @@ static u32 __init acrn_detect(void)
return acrn_cpuid_base();
}

+static unsigned long acrn_get_tsc_khz(void)
+{
+ setup_force_cpu_cap(X86_FEATURE_TSC_KNOWN_FREQ);
+ return cpuid_eax(ACRN_CPUID_TIMING_INFO);
+}
+
static void __init acrn_init_platform(void)
{
/* Setup the IDT for ACRN hypervisor callback */
base-commit: 1a2dcbdde82e3a5f1db9b2f4c48aa1aeba534fb2
--
2.34.1

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