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-rw-r--r--arch/powerpc/platforms/pseries/setup.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 5d97553e5c22..ca55882465d6 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
};