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authorPeter Maydell <peter.maydell@linaro.org>2017-08-10 18:53:39 +0100
committerPeter Maydell <peter.maydell@linaro.org>2017-08-10 18:53:39 +0100
commit95766c2cd04395e5712b4d5967b3251f35d537df (patch)
tree3a57304ab5961497cfec4ac3c00d818e4053f3f4
parent473a321122fd3c2c327a5a5d01a9a41f26f1734c (diff)
parent17d0bc01bfcce0ad4fb5105d4502595224569ff0 (diff)
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
# gpg: Signature made Thu 10 Aug 2017 18:48:13 BST # gpg: using RSA key 0x9CA4ABB381AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" # Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8 * remotes/stefanha/tags/block-pull-request: virtio-blk: handle blk_getlength() errors IDE: test flush on empty CDROM IDE: Do not flush empty CDROM drives Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--hw/block/virtio-blk.c4
-rw-r--r--hw/ide/core.c10
-rw-r--r--tests/ide-test.c19
3 files changed, 31 insertions, 2 deletions
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index b750bd8b53..a16ac75090 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -730,6 +730,7 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
BlockConf *conf = &s->conf.conf;
struct virtio_blk_config blkcfg;
uint64_t capacity;
+ int64_t length;
int blk_size = conf->logical_block_size;
blk_get_geometry(s->blk, &capacity);
@@ -752,7 +753,8 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
* divided by 512 - instead it is the amount of blk_size blocks
* per track (cylinder).
*/
- if (blk_getlength(s->blk) / conf->heads / conf->secs % blk_size) {
+ length = blk_getlength(s->blk);
+ if (length > 0 && length / conf->heads / conf->secs % blk_size) {
blkcfg.geometry.sectors = conf->secs & ~s->sector_mask;
} else {
blkcfg.geometry.sectors = conf->secs;
diff --git a/hw/ide/core.c b/hw/ide/core.c
index 0b48b64d3a..bea39536b0 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1063,7 +1063,15 @@ static void ide_flush_cache(IDEState *s)
s->status |= BUSY_STAT;
ide_set_retry(s);
block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
- s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
+
+ if (blk_bs(s->blk)) {
+ s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
+ } else {
+ /* XXX blk_aio_flush() crashes when blk_bs(blk) is NULL, remove this
+ * temporary workaround when blk_aio_*() functions handle NULL blk_bs.
+ */
+ ide_flush_cb(s, 0);
+ }
}
static void ide_cfata_metadata_inquiry(IDEState *s)
diff --git a/tests/ide-test.c b/tests/ide-test.c
index bfd79ddbdc..aa9de065fc 100644
--- a/tests/ide-test.c
+++ b/tests/ide-test.c
@@ -689,6 +689,24 @@ static void test_flush_nodev(void)
ide_test_quit();
}
+static void test_flush_empty_drive(void)
+{
+ QPCIDevice *dev;
+ QPCIBar bmdma_bar, ide_bar;
+
+ ide_test_start("-device ide-cd,bus=ide.0");
+ dev = get_pci_device(&bmdma_bar, &ide_bar);
+
+ /* FLUSH CACHE command on device 0 */
+ qpci_io_writeb(dev, ide_bar, reg_device, 0);
+ qpci_io_writeb(dev, ide_bar, reg_command, CMD_FLUSH_CACHE);
+
+ /* Just testing that qemu doesn't crash... */
+
+ free_pci_device(dev);
+ ide_test_quit();
+}
+
static void test_pci_retry_flush(void)
{
test_retry_flush("pc");
@@ -954,6 +972,7 @@ int main(int argc, char **argv)
qtest_add_func("/ide/flush", test_flush);
qtest_add_func("/ide/flush/nodev", test_flush_nodev);
+ qtest_add_func("/ide/flush/empty_drive", test_flush_empty_drive);
qtest_add_func("/ide/flush/retry_pci", test_pci_retry_flush);
qtest_add_func("/ide/flush/retry_isa", test_isa_retry_flush);