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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 15:50:46 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 05:22:10 +0300 |
| commit | a2b3e09ae41c71d27d9b8da9baf31e0d9a97b864 (patch) | |
| tree | 142ebc66c40f6055d7eb05859179e92dbc361ed2 /arch/powerpc/kernel | |
| parent | a5d33be0512b4565808a3aed05567cb56c0e6ad0 (diff) | |
| download | linux-a2b3e09ae41c71d27d9b8da9baf31e0d9a97b864.tar.xz | |
powerpc/32: Only use prepare_transfer_to_handler function on book3s/32 and e500
Only book3s/32 and e500 have significative work to do in
prepare_transfer_to_handler.
Other 32 bit have nothing to do at all.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b5e29ca0e557c11340415a13fe8b107189d315e1.1615552867.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_32.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 2 |
3 files changed, 6 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index b9a2935efec1..44d0eddf8738 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -48,6 +48,7 @@ */ .align 12 +#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500) .globl prepare_transfer_to_handler prepare_transfer_to_handler: andi. r12,r9,MSR_PR @@ -61,15 +62,12 @@ prepare_transfer_to_handler: /* if from kernel, check interrupted DOZE/NAP mode */ 2: kuap_save_and_lock r11, r12, r9, r5, r6 -#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500) lwz r12,TI_LOCAL_FLAGS(r2) mtcrf 0x01,r12 bt- 31-TLF_NAPPING,4f bt- 31-TLF_SLEEPING,7f -#endif /* CONFIG_PPC_BOOK3S_32 || CONFIG_E500 */ blr -#if defined (CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500) 4: rlwinm r12,r12,0,~_TLF_NAPPING stw r12,TI_LOCAL_FLAGS(r2) b power_save_ppc32_restore @@ -82,8 +80,8 @@ prepare_transfer_to_handler: kuap_restore r11, r2, r3, r4, r5 lwz r2, GPR2(r11) b fast_exception_return -#endif _ASM_NOKPROBE_SYMBOL(prepare_transfer_to_handler) +#endif /* CONFIG_PPC_BOOK3S_32 || CONFIG_E500 */ .globl transfer_to_syscall transfer_to_syscall: diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h index 80e45c800496..c018fcdf9157 100644 --- a/arch/powerpc/kernel/head_32.h +++ b/arch/powerpc/kernel/head_32.h @@ -132,7 +132,9 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) .endm .macro prepare_transfer_to_handler +#ifdef CONFIG_PPC_BOOK3S_32 bl prepare_transfer_to_handler +#endif .endm .macro SYSCALL_ENTRY trapno diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index 7f3dd5fae51d..cb96ae002af6 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -104,7 +104,9 @@ END_BTB_FLUSH_SECTION .endm .macro prepare_transfer_to_handler +#ifdef CONFIG_E500 bl prepare_transfer_to_handler +#endif .endm .macro SYSCALL_ENTRY trapno intno srr1 |