Received-SPF: pass (google.com: domain of linux-kernel+bounces-97734-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
Reply-To: Sean Christopherson <seanjc@google.com>
Date: Fri,  8 Mar 2024 17:27:24 -0800
In-Reply-To: <20240309012725.1409949-1-seanjc@google.com>
Precedence: bulk
Mime-Version: 1.0
References: <20240309012725.1409949-1-seanjc@google.com>
Message-ID: <20240309012725.1409949-9-seanjc@google.com>
Subject: [PATCH v6 8/9] KVM: VMX: Open code VMX preemption timer rate mask in
 its accessor
From: Sean Christopherson <seanjc@google.com>
To: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, 
	Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org, 
	Sean Christopherson <seanjc@google.com>, Paolo Bonzini <pbonzini@redhat.com>, 
	Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, 
	Shan Kang <shan.kang@intel.com>, Kai Huang <kai.huang@intel.com>, Xin Li <xin3.li@intel.com>
Content-Type: text/plain; charset="UTF-8"

From: Xin Li <xin3.li@intel.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@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]
Signed-off-by: Sean Christopherson <seanjc@google.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 6ff179b11235..90ed559076d7 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -148,7 +148,6 @@ static inline u32 vmx_basic_vmcs_mem_type(u64 vmx_basic)
 	return (vmx_basic & GENMASK_ULL(53, 50)) >> 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)
@@ -162,7 +161,7 @@ static inline u32 vmx_basic_vmcs_mem_type(u64 vmx_basic)
 
 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 e312c48f542f..4fcfa1a213fa 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -8613,7 +8613,7 @@ static __init int 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;
-- 
2.44.0.278.ge034bb2e1d-goog