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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
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@ -48,6 +48,7 @@
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*/
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.align 12
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#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500)
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.globl prepare_transfer_to_handler
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prepare_transfer_to_handler:
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andi. r12,r9,MSR_PR
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@ -61,15 +62,12 @@ prepare_transfer_to_handler:
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/* if from kernel, check interrupted DOZE/NAP mode */
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2:
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kuap_save_and_lock r11, r12, r9, r5, r6
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#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500)
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lwz r12,TI_LOCAL_FLAGS(r2)
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mtcrf 0x01,r12
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bt- 31-TLF_NAPPING,4f
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bt- 31-TLF_SLEEPING,7f
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#endif /* CONFIG_PPC_BOOK3S_32 || CONFIG_E500 */
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blr
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#if defined (CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500)
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4: rlwinm r12,r12,0,~_TLF_NAPPING
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stw r12,TI_LOCAL_FLAGS(r2)
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b power_save_ppc32_restore
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@ -82,8 +80,8 @@ prepare_transfer_to_handler:
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kuap_restore r11, r2, r3, r4, r5
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lwz r2, GPR2(r11)
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b fast_exception_return
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#endif
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_ASM_NOKPROBE_SYMBOL(prepare_transfer_to_handler)
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#endif /* CONFIG_PPC_BOOK3S_32 || CONFIG_E500 */
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.globl transfer_to_syscall
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transfer_to_syscall:
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@ -132,7 +132,9 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt)
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.endm
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.macro prepare_transfer_to_handler
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#ifdef CONFIG_PPC_BOOK3S_32
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bl prepare_transfer_to_handler
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#endif
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.endm
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.macro SYSCALL_ENTRY trapno
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@ -104,7 +104,9 @@ END_BTB_FLUSH_SECTION
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.endm
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.macro prepare_transfer_to_handler
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#ifdef CONFIG_E500
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bl prepare_transfer_to_handler
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#endif
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.endm
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.macro SYSCALL_ENTRY trapno intno srr1
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