diff options
| author | Michael Neuling <mikey@neuling.org> | 2013-04-25 15:30:57 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-07 20:33:03 -0700 |
| commit | 644ae55abcdf6c1e7d729621bf5ce7942dffe77e (patch) | |
| tree | c839e918059bf3882982070d7aac8bedb1e519b7 /arch | |
| parent | efaa9d79ccb5491181ea100dc6a9c575f626ef5a (diff) | |
powerpc: Fix hardware IRQs with MMU on exceptions when HV=0
commit 3e96ca7f007ddb06b82a74a68585d1dbafa85ff1 upstream.
POWER8 allows us to take interrupts with the MMU on. This gives us a
second set of vectors offset at 0x4000.
Unfortunately when coping these vectors we missed checking for MSR HV
for hardware interrupts (0x500). This results in us trying to use
HSRR0/1 when HV=0, rather than SRR0/1 on HW IRQs
The below fixes this to check CPU_FTR_HVMODE when patching the code at
0x4500.
Also we remove the check for CPU_FTR_ARCH_206 since relocation on IRQs
are only available in arch 2.07 and beyond.
Thanks to benh for helping find this.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 56bd92362ce1..3bbe7edf639f 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -797,7 +797,7 @@ hardware_interrupt_relon_hv: _MASKABLE_RELON_EXCEPTION_PSERIES(0x502, hardware_interrupt, EXC_HV, SOFTEN_TEST_HV) FTR_SECTION_ELSE _MASKABLE_RELON_EXCEPTION_PSERIES(0x500, hardware_interrupt, EXC_STD, SOFTEN_TEST_PR) - ALT_FTR_SECTION_END_IFSET(CPU_FTR_ARCH_206) + ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE) STD_RELON_EXCEPTION_PSERIES(0x4600, 0x600, alignment) STD_RELON_EXCEPTION_PSERIES(0x4700, 0x700, program_check) STD_RELON_EXCEPTION_PSERIES(0x4800, 0x800, fp_unavailable) |