Reviewed-by: Bibo Mao <maobibo@loongson.cn>
On 2025/10/6 下午3:45, Juergen Gross wrote:
> Remove the arch specific variant of paravirt_steal_clock() and use
> the common one instead.
>
> Signed-off-by: Juergen Gross <jgross@suse.com>
> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
> arch/loongarch/Kconfig | 1 +
> arch/loongarch/include/asm/paravirt.h | 10 ----------
> arch/loongarch/kernel/paravirt.c | 7 -------
> 3 files changed, 1 insertion(+), 17 deletions(-)
>
> diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
> index ea683bcea14c..7a9d1d0edc92 100644
> --- a/arch/loongarch/Kconfig
> +++ b/arch/loongarch/Kconfig
> @@ -671,6 +671,7 @@ 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
> diff --git a/arch/loongarch/include/asm/paravirt.h b/arch/loongarch/include/asm/paravirt.h
> index d219ea0d98ac..0111f0ad5f73 100644
> --- a/arch/loongarch/include/asm/paravirt.h
> +++ b/arch/loongarch/include/asm/paravirt.h
> @@ -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);
> diff --git a/arch/loongarch/kernel/paravirt.c b/arch/loongarch/kernel/paravirt.c
> index 8caaa94fed1a..c5e526098c0b 100644
> --- a/arch/loongarch/kernel/paravirt.c
> +++ b/arch/loongarch/kernel/paravirt.c
> @@ -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)
>