diff mbox series

[v2,4/5] riscv: kvm: Use SYM_*() assembly macros instead of deprecated ones

Message ID 20231024132655.730417-5-cleger@rivosinc.com (mailing list archive)
State New, archived
Headers show
Series riscv: cleanup assembly usage of ENTRY()/END() and use local labels | expand

Commit Message

Clément Léger Oct. 24, 2023, 1:26 p.m. UTC 
ENTRY()/END()/WEAK() macros are deprecated and we should make use of the
new SYM_*() macros [1] for better annotation of symbols. Replace the
deprecated ones with the new ones and fix wrong usage of END()/ENDPROC()
to correctly describe the symbols.

[1] https://docs.kernel.org/core-api/asm-annotations.html

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
---
 arch/riscv/kvm/vcpu_switch.S | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

Comments

Palmer Dabbelt Nov. 6, 2023, 5:47 p.m. UTC | #1 
On Tue, 24 Oct 2023 06:26:54 PDT (-0700), cleger@rivosinc.com wrote:
> ENTRY()/END()/WEAK() macros are deprecated and we should make use of the
> new SYM_*() macros [1] for better annotation of symbols. Replace the
> deprecated ones with the new ones and fix wrong usage of END()/ENDPROC()
> to correctly describe the symbols.
>
> [1] https://docs.kernel.org/core-api/asm-annotations.html
>
> Signed-off-by: Clément Léger <cleger@rivosinc.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
> ---
>  arch/riscv/kvm/vcpu_switch.S | 28 ++++++++++++----------------
>  1 file changed, 12 insertions(+), 16 deletions(-)
>
> diff --git a/arch/riscv/kvm/vcpu_switch.S b/arch/riscv/kvm/vcpu_switch.S
> index d74df8eb4d71..8b18473780ac 100644
> --- a/arch/riscv/kvm/vcpu_switch.S
> +++ b/arch/riscv/kvm/vcpu_switch.S
> @@ -15,7 +15,7 @@
>  	.altmacro
>  	.option norelax
>
> -ENTRY(__kvm_riscv_switch_to)
> +SYM_FUNC_START(__kvm_riscv_switch_to)
>  	/* Save Host GPRs (except A0 and T0-T6) */
>  	REG_S	ra, (KVM_ARCH_HOST_RA)(a0)
>  	REG_S	sp, (KVM_ARCH_HOST_SP)(a0)
> @@ -208,9 +208,9 @@ __kvm_switch_return:
>
>  	/* Return to C code */
>  	ret
> -ENDPROC(__kvm_riscv_switch_to)
> +SYM_FUNC_END(__kvm_riscv_switch_to)
>
> -ENTRY(__kvm_riscv_unpriv_trap)
> +SYM_CODE_START(__kvm_riscv_unpriv_trap)
>  	/*
>  	 * We assume that faulting unpriv load/store instruction is
>  	 * 4-byte long and blindly increment SEPC by 4.
> @@ -231,12 +231,10 @@ ENTRY(__kvm_riscv_unpriv_trap)
>  	csrr	a1, CSR_HTINST
>  	REG_S	a1, (KVM_ARCH_TRAP_HTINST)(a0)
>  	sret
> -ENDPROC(__kvm_riscv_unpriv_trap)
> +SYM_CODE_END(__kvm_riscv_unpriv_trap)
>
>  #ifdef	CONFIG_FPU
> -	.align 3
> -	.global __kvm_riscv_fp_f_save
> -__kvm_riscv_fp_f_save:
> +SYM_FUNC_START(__kvm_riscv_fp_f_save)
>  	csrr t2, CSR_SSTATUS
>  	li t1, SR_FS
>  	csrs CSR_SSTATUS, t1
> @@ -276,10 +274,9 @@ __kvm_riscv_fp_f_save:
>  	sw t0, KVM_ARCH_FP_F_FCSR(a0)
>  	csrw CSR_SSTATUS, t2
>  	ret
> +SYM_FUNC_END(__kvm_riscv_fp_f_save)
>
> -	.align 3
> -	.global __kvm_riscv_fp_d_save
> -__kvm_riscv_fp_d_save:
> +SYM_FUNC_START(__kvm_riscv_fp_d_save)
>  	csrr t2, CSR_SSTATUS
>  	li t1, SR_FS
>  	csrs CSR_SSTATUS, t1
> @@ -319,10 +316,9 @@ __kvm_riscv_fp_d_save:
>  	sw t0, KVM_ARCH_FP_D_FCSR(a0)
>  	csrw CSR_SSTATUS, t2
>  	ret
> +SYM_FUNC_END(__kvm_riscv_fp_d_save)
>
> -	.align 3
> -	.global __kvm_riscv_fp_f_restore
> -__kvm_riscv_fp_f_restore:
> +SYM_FUNC_START(__kvm_riscv_fp_f_restore)
>  	csrr t2, CSR_SSTATUS
>  	li t1, SR_FS
>  	lw t0, KVM_ARCH_FP_F_FCSR(a0)
> @@ -362,10 +358,9 @@ __kvm_riscv_fp_f_restore:
>  	fscsr t0
>  	csrw CSR_SSTATUS, t2
>  	ret
> +SYM_FUNC_END(__kvm_riscv_fp_f_restore)
>
> -	.align 3
> -	.global __kvm_riscv_fp_d_restore
> -__kvm_riscv_fp_d_restore:
> +SYM_FUNC_START(__kvm_riscv_fp_d_restore)
>  	csrr t2, CSR_SSTATUS
>  	li t1, SR_FS
>  	lw t0, KVM_ARCH_FP_D_FCSR(a0)
> @@ -405,4 +400,5 @@ __kvm_riscv_fp_d_restore:
>  	fscsr t0
>  	csrw CSR_SSTATUS, t2
>  	ret
> +SYM_FUNC_END(__kvm_riscv_fp_d_restore)
>  #endif

Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Anup Patel Dec. 13, 2023, 6:16 a.m. UTC | #2 
On Tue, Oct 24, 2023 at 6:58 PM Clément Léger <cleger@rivosinc.com> wrote:
>
> ENTRY()/END()/WEAK() macros are deprecated and we should make use of the
> new SYM_*() macros [1] for better annotation of symbols. Replace the
> deprecated ones with the new ones and fix wrong usage of END()/ENDPROC()
> to correctly describe the symbols.
>
> [1] https://docs.kernel.org/core-api/asm-annotations.html
>
> Signed-off-by: Clément Léger <cleger@rivosinc.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>

Queued this patch for Linux-6.8

Thanks,
Anup


> ---
>  arch/riscv/kvm/vcpu_switch.S | 28 ++++++++++++----------------
>  1 file changed, 12 insertions(+), 16 deletions(-)
>
> diff --git a/arch/riscv/kvm/vcpu_switch.S b/arch/riscv/kvm/vcpu_switch.S
> index d74df8eb4d71..8b18473780ac 100644
> --- a/arch/riscv/kvm/vcpu_switch.S
> +++ b/arch/riscv/kvm/vcpu_switch.S
> @@ -15,7 +15,7 @@
>         .altmacro
>         .option norelax
>
> -ENTRY(__kvm_riscv_switch_to)
> +SYM_FUNC_START(__kvm_riscv_switch_to)
>         /* Save Host GPRs (except A0 and T0-T6) */
>         REG_S   ra, (KVM_ARCH_HOST_RA)(a0)
>         REG_S   sp, (KVM_ARCH_HOST_SP)(a0)
> @@ -208,9 +208,9 @@ __kvm_switch_return:
>
>         /* Return to C code */
>         ret
> -ENDPROC(__kvm_riscv_switch_to)
> +SYM_FUNC_END(__kvm_riscv_switch_to)
>
> -ENTRY(__kvm_riscv_unpriv_trap)
> +SYM_CODE_START(__kvm_riscv_unpriv_trap)
>         /*
>          * We assume that faulting unpriv load/store instruction is
>          * 4-byte long and blindly increment SEPC by 4.
> @@ -231,12 +231,10 @@ ENTRY(__kvm_riscv_unpriv_trap)
>         csrr    a1, CSR_HTINST
>         REG_S   a1, (KVM_ARCH_TRAP_HTINST)(a0)
>         sret
> -ENDPROC(__kvm_riscv_unpriv_trap)
> +SYM_CODE_END(__kvm_riscv_unpriv_trap)
>
>  #ifdef CONFIG_FPU
> -       .align 3
> -       .global __kvm_riscv_fp_f_save
> -__kvm_riscv_fp_f_save:
> +SYM_FUNC_START(__kvm_riscv_fp_f_save)
>         csrr t2, CSR_SSTATUS
>         li t1, SR_FS
>         csrs CSR_SSTATUS, t1
> @@ -276,10 +274,9 @@ __kvm_riscv_fp_f_save:
>         sw t0, KVM_ARCH_FP_F_FCSR(a0)
>         csrw CSR_SSTATUS, t2
>         ret
> +SYM_FUNC_END(__kvm_riscv_fp_f_save)
>
> -       .align 3
> -       .global __kvm_riscv_fp_d_save
> -__kvm_riscv_fp_d_save:
> +SYM_FUNC_START(__kvm_riscv_fp_d_save)
>         csrr t2, CSR_SSTATUS
>         li t1, SR_FS
>         csrs CSR_SSTATUS, t1
> @@ -319,10 +316,9 @@ __kvm_riscv_fp_d_save:
>         sw t0, KVM_ARCH_FP_D_FCSR(a0)
>         csrw CSR_SSTATUS, t2
>         ret
> +SYM_FUNC_END(__kvm_riscv_fp_d_save)
>
> -       .align 3
> -       .global __kvm_riscv_fp_f_restore
> -__kvm_riscv_fp_f_restore:
> +SYM_FUNC_START(__kvm_riscv_fp_f_restore)
>         csrr t2, CSR_SSTATUS
>         li t1, SR_FS
>         lw t0, KVM_ARCH_FP_F_FCSR(a0)
> @@ -362,10 +358,9 @@ __kvm_riscv_fp_f_restore:
>         fscsr t0
>         csrw CSR_SSTATUS, t2
>         ret
> +SYM_FUNC_END(__kvm_riscv_fp_f_restore)
>
> -       .align 3
> -       .global __kvm_riscv_fp_d_restore
> -__kvm_riscv_fp_d_restore:
> +SYM_FUNC_START(__kvm_riscv_fp_d_restore)
>         csrr t2, CSR_SSTATUS
>         li t1, SR_FS
>         lw t0, KVM_ARCH_FP_D_FCSR(a0)
> @@ -405,4 +400,5 @@ __kvm_riscv_fp_d_restore:
>         fscsr t0
>         csrw CSR_SSTATUS, t2
>         ret
> +SYM_FUNC_END(__kvm_riscv_fp_d_restore)
>  #endif
> --
> 2.42.0
>
>
> --
> kvm-riscv mailing list
> kvm-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kvm-riscv
diff mbox series

Patch

diff --git a/arch/riscv/kvm/vcpu_switch.S b/arch/riscv/kvm/vcpu_switch.S
index d74df8eb4d71..8b18473780ac 100644
--- a/arch/riscv/kvm/vcpu_switch.S
+++ b/arch/riscv/kvm/vcpu_switch.S
@@ -15,7 +15,7 @@ 
 	.altmacro
 	.option norelax
 
-ENTRY(__kvm_riscv_switch_to)
+SYM_FUNC_START(__kvm_riscv_switch_to)
 	/* Save Host GPRs (except A0 and T0-T6) */
 	REG_S	ra, (KVM_ARCH_HOST_RA)(a0)
 	REG_S	sp, (KVM_ARCH_HOST_SP)(a0)
@@ -208,9 +208,9 @@  __kvm_switch_return:
 
 	/* Return to C code */
 	ret
-ENDPROC(__kvm_riscv_switch_to)
+SYM_FUNC_END(__kvm_riscv_switch_to)
 
-ENTRY(__kvm_riscv_unpriv_trap)
+SYM_CODE_START(__kvm_riscv_unpriv_trap)
 	/*
 	 * We assume that faulting unpriv load/store instruction is
 	 * 4-byte long and blindly increment SEPC by 4.
@@ -231,12 +231,10 @@  ENTRY(__kvm_riscv_unpriv_trap)
 	csrr	a1, CSR_HTINST
 	REG_S	a1, (KVM_ARCH_TRAP_HTINST)(a0)
 	sret
-ENDPROC(__kvm_riscv_unpriv_trap)
+SYM_CODE_END(__kvm_riscv_unpriv_trap)
 
 #ifdef	CONFIG_FPU
-	.align 3
-	.global __kvm_riscv_fp_f_save
-__kvm_riscv_fp_f_save:
+SYM_FUNC_START(__kvm_riscv_fp_f_save)
 	csrr t2, CSR_SSTATUS
 	li t1, SR_FS
 	csrs CSR_SSTATUS, t1
@@ -276,10 +274,9 @@  __kvm_riscv_fp_f_save:
 	sw t0, KVM_ARCH_FP_F_FCSR(a0)
 	csrw CSR_SSTATUS, t2
 	ret
+SYM_FUNC_END(__kvm_riscv_fp_f_save)
 
-	.align 3
-	.global __kvm_riscv_fp_d_save
-__kvm_riscv_fp_d_save:
+SYM_FUNC_START(__kvm_riscv_fp_d_save)
 	csrr t2, CSR_SSTATUS
 	li t1, SR_FS
 	csrs CSR_SSTATUS, t1
@@ -319,10 +316,9 @@  __kvm_riscv_fp_d_save:
 	sw t0, KVM_ARCH_FP_D_FCSR(a0)
 	csrw CSR_SSTATUS, t2
 	ret
+SYM_FUNC_END(__kvm_riscv_fp_d_save)
 
-	.align 3
-	.global __kvm_riscv_fp_f_restore
-__kvm_riscv_fp_f_restore:
+SYM_FUNC_START(__kvm_riscv_fp_f_restore)
 	csrr t2, CSR_SSTATUS
 	li t1, SR_FS
 	lw t0, KVM_ARCH_FP_F_FCSR(a0)
@@ -362,10 +358,9 @@  __kvm_riscv_fp_f_restore:
 	fscsr t0
 	csrw CSR_SSTATUS, t2
 	ret
+SYM_FUNC_END(__kvm_riscv_fp_f_restore)
 
-	.align 3
-	.global __kvm_riscv_fp_d_restore
-__kvm_riscv_fp_d_restore:
+SYM_FUNC_START(__kvm_riscv_fp_d_restore)
 	csrr t2, CSR_SSTATUS
 	li t1, SR_FS
 	lw t0, KVM_ARCH_FP_D_FCSR(a0)
@@ -405,4 +400,5 @@  __kvm_riscv_fp_d_restore:
 	fscsr t0
 	csrw CSR_SSTATUS, t2
 	ret
+SYM_FUNC_END(__kvm_riscv_fp_d_restore)
 #endif