signal/arm64: Expand __do_user_fault and remove it

Not all of the signals passed to __do_user_fault can be handled
the same way so expand the now tiny __do_user_fault in it's callers
and remove it.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 14d6ff8..7df3d8b 100644 (file)
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -354,12 +354,6 @@ static void set_thread_esr(unsigned long address, unsigned int esr)
        current->thread.fault_code = esr;
 }
 
-static void __do_user_fault(struct siginfo *info, unsigned int esr)
-{
-       set_thread_esr((unsigned long)info->si_addr, esr);
-       arm64_force_sig_info(info, esr_to_fault_info(esr)->name);
-}
-
 static void do_bad_area(unsigned long addr, unsigned int esr, struct pt_regs *regs)
 {
        /*
@@ -375,7 +369,8 @@ static void do_bad_area(unsigned long addr, unsigned int esr, struct pt_regs *re
                si.si_code      = inf->code;
                si.si_addr      = (void __user *)addr;
 
-               __do_user_fault(&si, esr);
+               set_thread_esr(addr, esr);
+               arm64_force_sig_info(&si, inf->name);
        } else {
                __do_kernel_fault(addr, esr, regs);
        }
@@ -576,7 +571,8 @@ retry:
                si.si_signo     = SIGBUS;
                si.si_code      = BUS_ADRERR;
                si.si_addr = (void __user *)addr;
-               __do_user_fault(&si, esr);
+               set_thread_esr(addr, esr);
+               arm64_force_sig_info(&si, esr_to_fault_info(esr)->name);
        } else if (fault & (VM_FAULT_HWPOISON_LARGE | VM_FAULT_HWPOISON)) {
                unsigned int lsb;
 
@@ -589,7 +585,8 @@ retry:
                si.si_code      = BUS_MCEERR_AR;
                si.si_addr = (void __user *)addr;
                si.si_addr_lsb  = lsb;
-               __do_user_fault(&si, esr);
+               set_thread_esr(addr, esr);
+               arm64_force_sig_info(&si, esr_to_fault_info(esr)->name);
        } else {
                /*
                 * Something tried to access memory that isn't in our memory
@@ -600,7 +597,8 @@ retry:
                si.si_code      = fault == VM_FAULT_BADACCESS ?
                                  SEGV_ACCERR : SEGV_MAPERR;
                si.si_addr = (void __user *)addr;
-               __do_user_fault(&si, esr);
+               set_thread_esr(addr, esr);
+               arm64_force_sig_info(&si, esr_to_fault_info(esr)->name);
        }
 
        return 0;