diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 5d97553e5c2..ca55882465d 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -41,6 +41,7 @@ #include <linux/root_dev.h> #include <linux/cpuidle.h> #include <linux/of.h> +#include <linux/kexec.h> #include <asm/mmu.h> #include <asm/processor.h> @@ -397,6 +398,35 @@ static int __init pSeries_enable_reloc_on_exc(void) } } +#ifdef CONFIG_KEXEC +static long pSeries_disable_reloc_on_exc(void) +{ + long rc; + + while (1) { + rc = disable_reloc_on_exceptions(); + if (!H_IS_LONG_BUSY(rc)) + return rc; + mdelay(get_longbusy_msecs(rc)); + } +} + +static void pSeries_machine_kexec(struct kimage *image) +{ + long rc; + + if (firmware_has_feature(FW_FEATURE_SET_MODE) && + (image->type != KEXEC_TYPE_CRASH)) { + rc = pSeries_disable_reloc_on_exc(); + if (rc != H_SUCCESS) + pr_warning("Warning: Failed to disable relocation on " + "exceptions: %ld\n", rc); + } + + default_machine_kexec(image); +} +#endif + static void __init pSeries_setup_arch(void) { panic_timeout = 10; @@ -697,4 +727,7 @@ define_machine(pseries) { .progress = rtas_progress, .system_reset_exception = pSeries_system_reset_exception, .machine_check_exception = pSeries_machine_check_exception, +#ifdef CONFIG_KEXEC + .machine_kexec = pSeries_machine_kexec, +#endif }; |