From 613e7a764501a236cdfce39561f9bcf60c78cf49 Mon Sep 17 00:00:00 2001 From: Bharata B Rao Date: Thu, 30 Jul 2015 20:25:15 +0530 Subject: [PATCH] spapr: Provide an error message when migration fails due to htab_shift mismatch Include an error message when migration fails due to mismatch in htab_shift values at source and target. This should provide a bit more verbose message in addition to the current migration failure message that reads like: qemu-system-ppc64: error while loading state for instance 0x0 of device 'spapr/htab' After this patch, the failure message will look like this: qemu-system-ppc64: htab_shift mismatch: source 29 target 24 qemu-system-ppc64: error while loading state for instance 0x0 of device 'spapr/htab' Signed-off-by: Bharata B Rao Signed-off-by: David Gibson --- hw/ppc/spapr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 05926a3eb2..dd58eb433a 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1329,6 +1329,8 @@ static int htab_load(QEMUFile *f, void *opaque, int version_id) if (section_hdr) { /* First section, just the hash shift */ if (spapr->htab_shift != section_hdr) { + error_report("htab_shift mismatch: source %d target %d", + section_hdr, spapr->htab_shift); return -EINVAL; } return 0;