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From cc96677469388bad3d66479379735cf75db069e3 Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Mon, 20 Jun 2016 16:32:39 +0200
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Subject: [PATCH] scsi: esp: fix migration
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Commit 926cde5 ("scsi: esp: make cmdbuf big enough for maximum CDB size",
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2016-06-16) changed the size of a migrated field. Split it in two
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parts, and only migrate the second part in a new vmstate version.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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hw/scsi/esp.c | 5 +++--
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include/migration/vmstate.h | 5 ++++-
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2 files changed, 7 insertions(+), 3 deletions(-)
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diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
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index baa0a2c..1f2f2d3 100644
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--- a/hw/scsi/esp.c
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+++ b/hw/scsi/esp.c
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@@ -574,7 +574,7 @@ static bool esp_mem_accepts(void *opaque, hwaddr addr,
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const VMStateDescription vmstate_esp = {
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.name ="esp",
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- .version_id = 3,
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+ .version_id = 4,
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.minimum_version_id = 3,
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.fields = (VMStateField[]) {
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VMSTATE_BUFFER(rregs, ESPState),
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@@ -585,7 +585,8 @@ const VMStateDescription vmstate_esp = {
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VMSTATE_BUFFER(ti_buf, ESPState),
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VMSTATE_UINT32(status, ESPState),
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VMSTATE_UINT32(dma, ESPState),
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- VMSTATE_BUFFER(cmdbuf, ESPState),
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+ VMSTATE_PARTIAL_BUFFER(cmdbuf, ESPState, 16),
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+ VMSTATE_BUFFER_START_MIDDLE_V(cmdbuf, ESPState, 16, 4),
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VMSTATE_UINT32(cmdlen, ESPState),
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VMSTATE_UINT32(do_cmd, ESPState),
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VMSTATE_UINT32(dma_left, ESPState),
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diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
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index 25ea58a..15ea767 100644
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--- a/include/migration/vmstate.h
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+++ b/include/migration/vmstate.h
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@@ -904,8 +904,11 @@ extern const VMStateInfo vmstate_info_bitmap;
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#define VMSTATE_PARTIAL_BUFFER(_f, _s, _size) \
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VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, 0, _size)
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+#define VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, _v) \
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+ VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, _start, sizeof(typeof_field(_s, _f)))
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+
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#define VMSTATE_BUFFER_START_MIDDLE(_f, _s, _start) \
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- VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, _start, sizeof(typeof_field(_s, _f)))
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+ VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, 0)
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#define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size) \
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VMSTATE_VBUFFER(_f, _s, 0, NULL, 0, _size)
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--
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1.7.0.4
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