linux-kernel - [PATCH 08/14] arm64/paravirt: use common code for paravirt_steal

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Message-ID: <20250911063433.13783-9-jgross@suse.com>
Date: Thu, 11 Sep 2025 08:34:27 +0200
From: Juergen Gross <jgross@...e.com>
To: linux-kernel@...r.kernel.org,
	virtualization@...ts.linux.dev,
	x86@...nel.org
Cc: Juergen Gross <jgross@...e.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Ajay Kaher <ajay.kaher@...adcom.com>,
	Alexey Makhalov <alexey.makhalov@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 08/14] arm64/paravirt: use common code for paravirt_steal_clock()

Remove the arch specific variant of paravirt_steal_clock() and use
the common one instead.

Signed-off-by: Juergen Gross <jgross@...e.com>
---
 arch/arm64/Kconfig                |  1 +
 arch/arm64/include/asm/paravirt.h | 10 ----------
 arch/arm64/kernel/paravirt.c      |  7 -------
 3 files changed, 1 insertion(+), 17 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index e9bbfacc35a6..08abcd353cf4 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1582,6 +1582,7 @@ config CC_HAVE_SHADOW_CALL_STACK
 
 config PARAVIRT
 	bool "Enable paravirtualization code"
+	select HAVE_PV_STEAL_CLOCK_GEN
 	help
 	  This changes the kernel so it can modify itself when it is run
 	  under a hypervisor, potentially improving performance significantly
diff --git a/arch/arm64/include/asm/paravirt.h b/arch/arm64/include/asm/paravirt.h
index c9f7590baacb..cb037e742372 100644
--- a/arch/arm64/include/asm/paravirt.h
+++ b/arch/arm64/include/asm/paravirt.h
@@ -3,16 +3,6 @@
 #define _ASM_ARM64_PARAVIRT_H
 
 #ifdef CONFIG_PARAVIRT
-#include <linux/static_call_types.h>
-
-u64 dummy_steal_clock(int cpu);
-
-DECLARE_STATIC_CALL(pv_steal_clock, dummy_steal_clock);
-
-static inline u64 paravirt_steal_clock(int cpu)
-{
-	return static_call(pv_steal_clock)(cpu);
-}
 
 int __init pv_time_init(void);
 
diff --git a/arch/arm64/kernel/paravirt.c b/arch/arm64/kernel/paravirt.c
index 943b60ce12f4..572efb96b23f 100644
--- a/arch/arm64/kernel/paravirt.c
+++ b/arch/arm64/kernel/paravirt.c
@@ -25,13 +25,6 @@
 #include <asm/pvclock-abi.h>
 #include <asm/smp_plat.h>
 
-static u64 native_steal_clock(int cpu)
-{
-	return 0;
-}
-
-DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock);
-
 struct pv_time_stolen_time_region {
 	struct pvclock_vcpu_stolen_time __rcu *kaddr;
 };
-- 
2.51.0