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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2024-09-02 21:17:19 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2024-09-13 17:28:36 +0200 |
| commit | b163596a5b6f27aa6a9eac4198a6c6ec0ce3d5f2 (patch) | |
| tree | c262c7abe84ca207a99ddd8ab4c8687b973c94cd /arch/powerpc/kernel | |
| parent | d175ee98fe545d2c56df22751314584cce228307 (diff) | |
| download | lwn-b163596a5b6f27aa6a9eac4198a6c6ec0ce3d5f2.tar.gz lwn-b163596a5b6f27aa6a9eac4198a6c6ec0ce3d5f2.zip | |
powerpc/vdso32: Add crtsavres
Commit 08c18b63d965 ("powerpc/vdso32: Add missing _restgpr_31_x to fix
build failure") added _restgpr_31_x to the vdso for gettimeofday, but
the work on getrandom shows that we will need more of those functions.
Remove _restgpr_31_x and link in crtsavres.o so that we get all
save/restore functions when optimising the kernel for size.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/vdso/Makefile | 5 | ||||
| -rw-r--r-- | arch/powerpc/kernel/vdso/gettimeofday.S | 13 |
2 files changed, 4 insertions, 14 deletions
diff --git a/arch/powerpc/kernel/vdso/Makefile b/arch/powerpc/kernel/vdso/Makefile index 1425b6edc66b..c07a425b8f78 100644 --- a/arch/powerpc/kernel/vdso/Makefile +++ b/arch/powerpc/kernel/vdso/Makefile @@ -43,6 +43,7 @@ else endif targets := $(obj-vdso32) vdso32.so.dbg vgettimeofday-32.o +targets += crtsavres-32.o obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) targets += $(obj-vdso64) vdso64.so.dbg vgettimeofday-64.o obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) @@ -68,7 +69,7 @@ targets += vdso64.lds CPPFLAGS_vdso64.lds += -P -C # link rule for the .so file, .lds has to be first -$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o FORCE +$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o $(obj)/crtsavres-32.o FORCE $(call if_changed,vdso32ld_and_check) $(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o FORCE $(call if_changed,vdso64ld_and_check) @@ -76,6 +77,8 @@ $(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o # assembly rules for the .S files $(obj-vdso32): %-32.o: %.S FORCE $(call if_changed_dep,vdso32as) +$(obj)/crtsavres-32.o: %-32.o: $(srctree)/arch/powerpc/lib/crtsavres.S FORCE + $(call if_changed_dep,vdso32as) $(obj)/vgettimeofday-32.o: %-32.o: %.c FORCE $(call if_changed_dep,vdso32cc) $(obj-vdso64): %-64.o: %.S FORCE diff --git a/arch/powerpc/kernel/vdso/gettimeofday.S b/arch/powerpc/kernel/vdso/gettimeofday.S index 48fc6658053a..67254ac9c8bb 100644 --- a/arch/powerpc/kernel/vdso/gettimeofday.S +++ b/arch/powerpc/kernel/vdso/gettimeofday.S @@ -118,16 +118,3 @@ V_FUNCTION_END(__kernel_clock_getres) V_FUNCTION_BEGIN(__kernel_time) cvdso_call __c_kernel_time call_time=1 V_FUNCTION_END(__kernel_time) - -/* Routines for restoring integer registers, called by the compiler. */ -/* Called with r11 pointing to the stack header word of the caller of the */ -/* function, just beyond the end of the integer restore area. */ -#ifndef __powerpc64__ -_GLOBAL(_restgpr_31_x) -_GLOBAL(_rest32gpr_31_x) - lwz r0,4(r11) - lwz r31,-4(r11) - mtlr r0 - mr r1,r11 - blr -#endif |