diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-09-27 09:16:33 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-04 01:01:17 +1100 |
| commit | 91bf695596f594e42d69d70deb2ae53cafecf77c (patch) | |
| tree | f227a7426c8e357087db461585f0d48b2969f6fb /arch/powerpc/kernel/signal_32.c | |
| parent | 550e6074c106e1a6fb57dfef62f0daede12d832c (diff) | |
powerpc/vdso: Retrieve sigtramp offsets at buildtime
This is copied from arm64.
Instead of using runtime generated signal trampoline offsets,
get offsets at buildtime.
If the said trampoline doesn't exist, build will fail. So no
need to check whether the trampoline exists or not in the VDSO.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f8bfd6812c3e3678b1cdb4d55a52f9eb022b40d3.1601197618.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/signal_32.c')
| -rw-r--r-- | arch/powerpc/kernel/signal_32.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index e45aafef4c5b..934cbdf6dd10 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -801,8 +801,8 @@ int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset, } /* Save user registers on the stack */ - if (vdso32_rt_sigtramp && tsk->mm->context.vdso) { - tramp = (unsigned long)tsk->mm->context.vdso + vdso32_rt_sigtramp; + if (tsk->mm->context.vdso) { + tramp = VDSO32_SYMBOL(tsk->mm->context.vdso, sigtramp_rt32); } else { tramp = (unsigned long)mctx->mc_pad; /* Set up the sigreturn trampoline: li r0,sigret; sc */ @@ -901,8 +901,8 @@ int handle_signal32(struct ksignal *ksig, sigset_t *oldset, else unsafe_save_user_regs(regs, mctx, tm_mctx, 1, failed); - if (vdso32_sigtramp && tsk->mm->context.vdso) { - tramp = (unsigned long)tsk->mm->context.vdso + vdso32_sigtramp; + if (tsk->mm->context.vdso) { + tramp = VDSO32_SYMBOL(tsk->mm->context.vdso, sigtramp32); } else { tramp = (unsigned long)mctx->mc_pad; /* Set up the sigreturn trampoline: li r0,sigret; sc */ |