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loongarch/paravirt: Use common code for paravirt_steal_clock()

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

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260105110520.21356-10-jgross@suse.com
This commit is contained in:
Juergen Gross 2026-01-05 12:05:08 +01:00 committed by Borislav Petkov (AMD)
parent ad892c4851
commit b8431b901e
3 changed files with 1 additions and 17 deletions
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1
arch/loongarch/Kconfig
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@ -687,6 +687,7 @@ source "kernel/livepatch/Kconfig"
config PARAVIRT
bool "Enable paravirtualization code"
depends on AS_HAS_LVZ_EXTENSION
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

10
arch/loongarch/include/asm/paravirt.h
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@ -4,16 +4,6 @@
#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_ipi_init(void);
int __init pv_time_init(void);
int __init pv_spinlock_init(void);

7
arch/loongarch/kernel/paravirt.c
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@ -13,13 +13,6 @@ static int has_steal_clock;
static DEFINE_PER_CPU(struct kvm_steal_time, steal_time) __aligned(64);
DEFINE_STATIC_KEY_FALSE(virt_spin_lock_key);
static u64 native_steal_clock(int cpu)
{
return 0;
}
DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock);
static bool steal_acc = true;
static int __init parse_no_stealacc(char *arg)