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| author | Matt Fleming <matt@console-pimps.org> | 2009-08-28 21:37:20 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-29 20:31:44 +0900 |
| commit | 4aa5ac4ef44dd8c986241c54298abd7910b78b3f (patch) | |
| tree | 960cfde9c92d8d50ae04e3c6042143e101d16ae1 /arch/sh | |
| parent | e79d57479c86e388051244e1f17851a0e63d1ff0 (diff) | |
| download | op-kernel-dev-4aa5ac4ef44dd8c986241c54298abd7910b78b3f.zip op-kernel-dev-4aa5ac4ef44dd8c986241c54298abd7910b78b3f.tar.gz | |
sh: Only shout about fixing up unexpected unaligned accesses
Some unaligned accesses are completely expected. For example, the
trapped_io code uses the unaligned access fixup code path so there's no
need to warn about having to fixup the unaligned access.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/include/asm/system_32.h | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/io_trapped.c | 3 | ||||
| -rw-r--r-- | arch/sh/kernel/traps_32.c | 9 |
3 files changed, 8 insertions, 6 deletions
diff --git a/arch/sh/include/asm/system_32.h b/arch/sh/include/asm/system_32.h index 81e0d66..d3ab269 100644 --- a/arch/sh/include/asm/system_32.h +++ b/arch/sh/include/asm/system_32.h @@ -199,7 +199,7 @@ do { \ #endif int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs, - struct mem_access *ma); + struct mem_access *ma, int); asmlinkage void do_address_error(struct pt_regs *regs, unsigned long writeaccess, diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c index e27a19e..69be603 100644 --- a/arch/sh/kernel/io_trapped.c +++ b/arch/sh/kernel/io_trapped.c @@ -284,7 +284,8 @@ int handle_trapped_io(struct pt_regs *regs, unsigned long address) return 0; } - tmp = handle_unaligned_access(instruction, regs, &trapped_io_access); + tmp = handle_unaligned_access(instruction, regs, + &trapped_io_access, 1); set_fs(oldfs); return tmp == 0; } diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c index c581dc3..583ace5 100644 --- a/arch/sh/kernel/traps_32.c +++ b/arch/sh/kernel/traps_32.c @@ -449,7 +449,7 @@ static inline int handle_delayslot(struct pt_regs *regs, #define SH_PC_12BIT_OFFSET(instr) ((((signed short)(instr<<4))>>3) + 4) int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs, - struct mem_access *ma) + struct mem_access *ma, int expected) { u_int rm; int ret, index; @@ -458,7 +458,7 @@ int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs, rm = regs->regs[index]; /* shout about fixups */ - if (printk_ratelimit()) + if (!expected && printk_ratelimit()) printk(KERN_NOTICE "Fixing up unaligned %s access " "in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n", user_mode(regs) ? "userspace" : "kernel", @@ -657,7 +657,7 @@ fixup: set_fs(USER_DS); tmp = handle_unaligned_access(instruction, regs, - &user_mem_access); + &user_mem_access, 0); set_fs(oldfs); if (tmp==0) @@ -694,7 +694,8 @@ uspace_segv: die("insn faulting in do_address_error", regs, 0); } - handle_unaligned_access(instruction, regs, &user_mem_access); + handle_unaligned_access(instruction, regs, + &user_mem_access, 0); set_fs(oldfs); } } |
