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| author | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-18 10:56:25 +0200 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-21 15:52:43 +0200 |
| commit | 5d8fb8a58659098a845235f08c1f69de0c96297c (patch) | |
| tree | 74072d4c1cb24cc216f16fc4ac480371a86191d5 | |
| parent | signal/powerpc: Call force_sig_fault from _exception (diff) | |
| download | linux-5d8fb8a58659098a845235f08c1f69de0c96297c.tar.xz linux-5d8fb8a58659098a845235f08c1f69de0c96297c.zip | |
signal/powerpc: Specialize _exception_pkey for handling pkey exceptions
Now that _exception no longer calls _exception_pkey it is no longer
necessary to handle any signal with any si_code. All pkey exceptions
are SIGSEGV with paired with SEGV_PKUERR. So just handle
that case and remove the now unnecessary parameters from _exception_pkey.
Reviewed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
| -rw-r--r-- | arch/powerpc/include/asm/bug.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/mm/fault.c | 2 |
3 files changed, 7 insertions, 7 deletions
diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h index fd06dbe7d7d3..fed7e6241349 100644 --- a/arch/powerpc/include/asm/bug.h +++ b/arch/powerpc/include/asm/bug.h @@ -133,7 +133,7 @@ struct pt_regs; extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long); extern void bad_page_fault(struct pt_regs *, unsigned long, int); extern void _exception(int, struct pt_regs *, int, unsigned long); -extern void _exception_pkey(int, struct pt_regs *, int, unsigned long, int); +extern void _exception_pkey(struct pt_regs *, unsigned long, int); extern void die(const char *, struct pt_regs *, long); extern bool die_will_crash(void); extern void panic_flush_kmsg_start(void); diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index c38bec51dd84..e5ea69222459 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -362,20 +362,20 @@ static bool exception_common(int signr, struct pt_regs *regs, int code, return true; } -void _exception_pkey(int signr, struct pt_regs *regs, int code, unsigned long addr, int key) +void _exception_pkey(struct pt_regs *regs, unsigned long addr, int key) { siginfo_t info; - if (!exception_common(signr, regs, code, addr)) + if (!exception_common(SIGSEGV, regs, SEGV_PKUERR, addr)) return; clear_siginfo(&info); - info.si_signo = signr; - info.si_code = code; + info.si_signo = SIGSEGV; + info.si_code = SEGV_PKUERR; info.si_addr = (void __user *) addr; info.si_pkey = key; - force_sig_info(signr, &info, current); + force_sig_info(info.si_signo, &info, current); } void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr) diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index a84d06b7d50d..406d0e0ef096 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -152,7 +152,7 @@ static int bad_key_fault_exception(struct pt_regs *regs, unsigned long address, if (!user_mode(regs)) return SIGSEGV; - _exception_pkey(SIGSEGV, regs, SEGV_PKUERR, address, pkey); + _exception_pkey(regs, address, pkey); return 0; } |