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Message-ID: <20250709033242.267892-13-Neeraj.Upadhyay@amd.com>
Date: Wed, 9 Jul 2025 09:02:19 +0530
From: Neeraj Upadhyay <Neeraj.Upadhyay@....com>
To: <linux-kernel@...r.kernel.org>
CC: <bp@...en8.de>, <tglx@...utronix.de>, <mingo@...hat.com>,
	<dave.hansen@...ux.intel.com>, <Thomas.Lendacky@....com>, <nikunj@....com>,
	<Santosh.Shukla@....com>, <Vasant.Hegde@....com>,
	<Suravee.Suthikulpanit@....com>, <David.Kaplan@....com>, <x86@...nel.org>,
	<hpa@...or.com>, <peterz@...radead.org>, <seanjc@...gle.com>,
	<pbonzini@...hat.com>, <kvm@...r.kernel.org>,
	<kirill.shutemov@...ux.intel.com>, <huibo.wang@....com>,
	<naveen.rao@....com>, <kai.huang@...el.com>
Subject: [RFC PATCH v8 12/35] x86/apic: KVM: Move lapic set/clear_vector() helpers to common code

Move apic_clear_vector() and apic_set_vector() helper functions to
apic.h in order to reuse them in the Secure AVIC guest APIC driver
in later patches to atomically set/clear vectors in the APIC backing
page.

No functional change intended.

Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@....com>
---
Changes since v7:
 - Commit log update.

 arch/x86/include/asm/apic.h | 10 ++++++++++
 arch/x86/kvm/lapic.h        | 10 ----------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index b8b5fe875bde..c6d1c51f71ec 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -547,6 +547,16 @@ static __always_inline void apic_set_reg64(void *regs, int reg, u64 val)
 	*((u64 *) (regs + reg)) = val;
 }
 
+static inline void apic_clear_vector(int vec, void *bitmap)
+{
+	clear_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
+}
+
+static inline void apic_set_vector(int vec, void *bitmap)
+{
+	set_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
+}
+
 /*
  * Warm reset vector position:
  */
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 174df6996404..31284ec61a6a 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -147,16 +147,6 @@ void kvm_lapic_exit(void);
 
 u64 kvm_lapic_readable_reg_mask(struct kvm_lapic *apic);
 
-static inline void apic_clear_vector(int vec, void *bitmap)
-{
-	clear_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
-}
-
-static inline void apic_set_vector(int vec, void *bitmap)
-{
-	set_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
-}
-
 static inline void kvm_lapic_set_irr(int vec, struct kvm_lapic *apic)
 {
 	apic_set_vector(vec, apic->regs + APIC_IRR);
-- 
2.34.1


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