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SubjectRe: [PATCH v2 1/7] powerpc: Remove SYNC on non 6xx
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Le 29/09/2020 à 08:09, Christophe Leroy a écrit :
> SYNC is usefull for Powerpc 601 only. On everything else,
> SYNC is empty.
>
> Remove it from code that is not made to run on 6xx.
>
> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>

Oops, the last patch of the series is missing. Will resend, sorry for the noise.

Christophe

> ---
> arch/powerpc/kernel/head_40x.S | 1 -
> arch/powerpc/kernel/head_booke.h | 1 -
> arch/powerpc/kernel/misc_64.S | 1 -
> 3 files changed, 3 deletions(-)
>
> diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
> index 5b282d9965a5..44c9018aed1b 100644
> --- a/arch/powerpc/kernel/head_40x.S
> +++ b/arch/powerpc/kernel/head_40x.S
> @@ -72,7 +72,6 @@ turn_on_mmu:
> lis r0,start_here@h
> ori r0,r0,start_here@l
> mtspr SPRN_SRR0,r0
> - SYNC
> rfi /* enables MMU */
> b . /* prevent prefetch past rfi */
>
> diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
> index 18f87bf9e32b..71c359d438b5 100644
> --- a/arch/powerpc/kernel/head_booke.h
> +++ b/arch/powerpc/kernel/head_booke.h
> @@ -176,7 +176,6 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV)
> #endif
> mtspr SPRN_SRR1,r10
> mtspr SPRN_SRR0,r11
> - SYNC
> RFI /* jump to handler, enable MMU */
> 99: b ret_from_kernel_syscall
> .endm
> diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
> index 7bb46ad98207..070465825c21 100644
> --- a/arch/powerpc/kernel/misc_64.S
> +++ b/arch/powerpc/kernel/misc_64.S
> @@ -365,7 +365,6 @@ _GLOBAL(kexec_smp_wait)
>
> li r4,KEXEC_STATE_REAL_MODE
> stb r4,PACAKEXECSTATE(r13)
> - SYNC
>
> b kexec_wait
>
>

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