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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-09-29 06:48:31 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-10-08 21:17:12 +1100 |
| commit | ca1d3443b4dd1e8f152bd6c881ddb3eb2996179a (patch) | |
| tree | 5e9a840a5ce53e3f2b33f375d9c2e1d34d08a80a /arch/powerpc/kernel | |
| parent | 13135b461cf205941308984bd3271ec7d403dc40 (diff) | |
| download | linux-ca1d3443b4dd1e8f152bd6c881ddb3eb2996179a.tar.bz2 | |
powerpc: Remove SYNC on non 6xx
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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/27951fa6c9a8f80724d1bc81a6117ac32343a55d.1601362098.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/head_40x.S | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/misc_64.S | 1 |
3 files changed, 0 insertions, 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 |