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signal/powerpc: Specialize _exception_pkey for handling pkey exceptions

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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>
This commit is contained in:
Eric W. Biederman
2018-09-18 10:56:25 +02:00
parent c1c7c85cea
commit 5d8fb8a586
3 changed files with 7 additions and 7 deletions
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10
arch/powerpc/kernel/traps.c
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@@ -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)