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[PULL,3/3] ppc: Fix migration of the XER register

Message ID 1460956667-9520-4-git-send-email-david@gibson.dropbear.id.au (mailing list archive)
State New, archived
Headers show

Commit Message

David Gibson April 18, 2016, 5:17 a.m. UTC 
From: Thomas Huth <thuth@redhat.com>

env->xer only holds the lower bits of the XER register nowadays, the
SO, OV and CA bits are stored in separate variables (see the function
cpu_write_xer() for details). Since the migration code currently only
reads the "xer" variable, the upper bits are lost during migration.
Fix it by using cpu_read_xer() instead.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target-ppc/machine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/target-ppc/machine.c b/target-ppc/machine.c
index 692121e..46684fb 100644
--- a/target-ppc/machine.c
+++ b/target-ppc/machine.c
@@ -136,7 +136,7 @@  static void cpu_pre_save(void *opaque)
 
     env->spr[SPR_LR] = env->lr;
     env->spr[SPR_CTR] = env->ctr;
-    env->spr[SPR_XER] = env->xer;
+    env->spr[SPR_XER] = cpu_read_xer(env);
 #if defined(TARGET_PPC64)
     env->spr[SPR_CFAR] = env->cfar;
 #endif