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Message-ID: <20240605231918.2915961-10-seanjc@google.com>
Date: Wed, 5 Jun 2024 16:19:17 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>,
Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>
Cc: linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
Xiaoyao Li <xiaoyao.li@...el.com>, Kai Huang <kai.huang@...el.com>,
Jim Mattson <jmattson@...gle.com>, Shan Kang <shan.kang@...el.com>, Xin Li <xin3.li@...el.com>,
Zhao Liu <zhao1.liu@...el.com>
Subject: [PATCH v8 09/10] KVM: VMX: Open code VMX preemption timer rate mask
in its accessor
From: Xin Li <xin3.li@...el.com>
Use vmx_misc_preemption_timer_rate() to get the rate in hardware_setup(),
and open code the rate's bitmask in vmx_misc_preemption_timer_rate() so
that the function looks like all the helpers that grab values from
VMX_BASIC and VMX_MISC MSR values.
No functional change intended.
Cc: Shan Kang <shan.kang@...el.com>
Cc: Kai Huang <kai.huang@...el.com>
Signed-off-by: Xin Li <xin3.li@...el.com>
[sean: split to separate patch, write changelog]
Reviewed-by: Kai Huang <kai.huang@...el.com>
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
arch/x86/include/asm/vmx.h | 3 +--
arch/x86/kvm/vmx/vmx.c | 2 +-
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 400819ccb42c..f7fd4369b821 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -153,7 +153,6 @@ static inline u64 vmx_basic_encode_vmcs_info(u32 revision, u16 size, u8 memtype)
return revision | ((u64)size << 32) | ((u64)memtype << 50);
}
-#define VMX_MISC_PREEMPTION_TIMER_RATE_MASK GENMASK_ULL(4, 0)
#define VMX_MISC_SAVE_EFER_LMA BIT_ULL(5)
#define VMX_MISC_ACTIVITY_HLT BIT_ULL(6)
#define VMX_MISC_ACTIVITY_SHUTDOWN BIT_ULL(7)
@@ -167,7 +166,7 @@ static inline u64 vmx_basic_encode_vmcs_info(u32 revision, u16 size, u8 memtype)
static inline int vmx_misc_preemption_timer_rate(u64 vmx_misc)
{
- return vmx_misc & VMX_MISC_PREEMPTION_TIMER_RATE_MASK;
+ return vmx_misc & GENMASK_ULL(4, 0);
}
static inline int vmx_misc_cr3_count(u64 vmx_misc)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 3141ef8679e2..69865e7a3506 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -8536,7 +8536,7 @@ __init int vmx_hardware_setup(void)
u64 use_timer_freq = 5000ULL * 1000 * 1000;
cpu_preemption_timer_multi =
- vmcs_config.misc & VMX_MISC_PREEMPTION_TIMER_RATE_MASK;
+ vmx_misc_preemption_timer_rate(vmcs_config.misc);
if (tsc_khz)
use_timer_freq = (u64)tsc_khz * 1000;
--
2.45.1.467.gbab1589fc0-goog
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