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From f72f8a75f6b29f02a2226324901e35dbb07ae932 Mon Sep 17 00:00:00 2001
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From: Markus Armbruster <armbru@redhat.com>
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Date: Fri, 17 May 2019 06:50:53 +0200
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Subject: [PATCH 26/53] pflash_cfi01: Do not exit() on guest aborting "write to
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buffer"
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Markus Armbruster <armbru@redhat.com>
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Message-id: <20190517065120.12028-5-armbru@redhat.com>
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Patchwork-id: 87986
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O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH v3 04/31] pflash_cfi01: Do not exit() on guest aborting "write to buffer"
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Bugzilla: 1624009
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RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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When a guest tries to abort "write to buffer" (command 0xE8), we print
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"PFLASH: Possible BUG - Write block confirm", then exit(1). Letting
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the guest terminate QEMU is not a good idea. Instead, LOG_UNIMP we
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screwed up, then reset the device.
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Macro PFLASH_BUG() is now unused; delete it.
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Suggested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Message-Id: <20190308094610.21210-3-armbru@redhat.com>
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(cherry picked from commit 2d93bebf81520ccebeb9a3ea9bd051ce088854ea)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/block/pflash_cfi01.c | 13 +++++--------
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1 file changed, 5 insertions(+), 8 deletions(-)
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diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
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index 389bc60..c565db1 100644
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--- a/hw/block/pflash_cfi01.c
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+++ b/hw/block/pflash_cfi01.c
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@@ -49,12 +49,6 @@
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#include "hw/sysbus.h"
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#include "sysemu/sysemu.h"
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-#define PFLASH_BUG(fmt, ...) \
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-do { \
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- fprintf(stderr, "PFLASH: Possible BUG - " fmt, ## __VA_ARGS__); \
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- exit(1); \
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-} while(0)
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-
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/* #define PFLASH_DEBUG */
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#ifdef PFLASH_DEBUG
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#define DPRINTF(fmt, ...) \
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@@ -636,8 +630,11 @@ static void pflash_write(PFlashCFI01 *pfl, hwaddr offset,
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pfl->wcycle = 0;
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pfl->status |= 0x80;
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} else {
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- DPRINTF("%s: unknown command for \"write block\"\n", __func__);
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- PFLASH_BUG("Write block confirm");
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+ qemu_log_mask(LOG_UNIMP,
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+ "%s: Aborting write to buffer not implemented,"
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+ " the data is already written to storage!\n"
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+ "Flash device reset into READ mode.\n",
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+ __func__);
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goto reset_flash;
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}
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break;
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--
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1.8.3.1
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