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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-08 19:10:18 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-08 19:10:18 +0100 |
| commit | 9d2bc1a4ccc0da617bab6bba3278705e894365ca (patch) | |
| tree | 9e31c23dd4802b18cabef125b06d3748b8751171 /arch | |
| parent | Merge branch 'sh/for-2.6.33' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff) | |
| parent | powerpc/pseries: Fix kexec regression caused by CPPR tracking (diff) | |
| download | linux-9d2bc1a4ccc0da617bab6bba3278705e894365ca.tar.xz linux-9d2bc1a4ccc0da617bab6bba3278705e894365ca.zip | |
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/pseries: Fix kexec regression caused by CPPR tracking
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/pseries/xics.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c index 1ee66db003be..f5f79196721c 100644 --- a/arch/powerpc/platforms/pseries/xics.c +++ b/arch/powerpc/platforms/pseries/xics.c @@ -784,9 +784,13 @@ static void xics_set_cpu_priority(unsigned char cppr) { struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr); - BUG_ON(os_cppr->index != 0); + /* + * we only really want to set the priority when there's + * just one cppr value on the stack + */ + WARN_ON(os_cppr->index != 0); - os_cppr->stack[os_cppr->index] = cppr; + os_cppr->stack[0] = cppr; if (firmware_has_feature(FW_FEATURE_LPAR)) lpar_cppr_info(cppr); @@ -821,8 +825,14 @@ void xics_setup_cpu(void) void xics_teardown_cpu(void) { + struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr); int cpu = smp_processor_id(); + /* + * we have to reset the cppr index to 0 because we're + * not going to return from the IPI + */ + os_cppr->index = 0; xics_set_cpu_priority(0); /* Clear any pending IPI request */ |