diff options
| author | Michael Neuling <mikey@neuling.org> | 2013-06-24 01:47:22 -0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-25 03:24:39 -0400 |
| commit | b0b0aa9c7faf94e92320eabd8a1786c7747e40a8 (patch) | |
| tree | 6b93f3c7d29c8e8b2b4d65f72dafe0693ea0ae20 /arch/powerpc/kernel/hw_breakpoint.c | |
| parent | e7f345a2a36754e43673e86870a7a89101fb13e3 (diff) | |
powerpc/hw_brk: Fix setting of length for exact mode breakpoints
The smallest match region for both the DABR and DAWR is 8 bytes, so the
kernel needs to filter matches when users want to look at regions smaller than
this.
Currently we set the length of PPC_BREAKPOINT_MODE_EXACT breakpoints to 8.
This is wrong as in exact mode we should only match on 1 address, hence the
length should be 1.
This ensures that the kernel will filter out any exact mode hardware breakpoint
matches on any addresses other than the requested one.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Reported-by: Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/hw_breakpoint.c')
0 files changed, 0 insertions, 0 deletions