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KVM: VMX: Open code VMX preemption timer rate mask in its accessor

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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@intel.com>
Cc: Kai Huang <kai.huang@intel.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
[sean: split to separate patch, write changelog]
Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Link: https://lore.kernel.org/r/20240605231918.2915961-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Xin Li 2024-06-05 16:19:17 -07:00 committed by Sean Christopherson
parent dc1e67f70f
commit 8f56b14e9f
2 changed files with 2 additions and 3 deletions
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3
arch/x86/include/asm/vmx.h
View File

@ -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)

2
arch/x86/kvm/vmx/vmx.c
View File

@ -8517,7 +8517,7 @@ __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;