From: Mark Brown Date: Tue, 27 Dec 2022 13:01:08 +0000 (+0000) Subject: arm64/ptrace: Use system_supports_tpidr2() to check for TPIDR2 support X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c3cdd54c6138871b04dc2306fbfe30ece947ac48;p=linux.git arm64/ptrace: Use system_supports_tpidr2() to check for TPIDR2 support We have a separate system_supports_tpidr2() to check for TPIDR2 support but were using system_supports_sme() in tls_set(). While these are currently identical let's use the specific check instead so we don't have any surprises in future. Reported-by: Will Deacon Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20221208-arm64-tpidr2-ptrace-feat-v2-1-3760c895a574@kernel.org Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 2686ab1576017..33d985bb27070 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -683,7 +683,7 @@ static int tls_set(struct task_struct *target, const struct user_regset *regset, unsigned long tls[2]; tls[0] = target->thread.uw.tp_value; - if (system_supports_sme()) + if (system_supports_tpidr2()) tls[1] = target->thread.tpidr2_el0; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, tls, 0, count); @@ -691,7 +691,7 @@ static int tls_set(struct task_struct *target, const struct user_regset *regset, return ret; target->thread.uw.tp_value = tls[0]; - if (system_supports_sme()) + if (system_supports_tpidr2()) target->thread.tpidr2_el0 = tls[1]; return ret;