diff options
| author |   Jes Sorensen <jes@sgi.com> | 2009-05-25 15:12:49 +0200 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2009-06-07 09:28:11 +0300 |
| commit | aaf630a4dd27f8d6e7b4b4c3e44d537a310624f6 (patch) | |
| tree | 33277ed9dbb9c135ba3e9ec0089275b7a781b26d /dma-helpers.c | |
| parent | Make qemu-kvm build and run again on ia64 (diff) | |
| download | qemu-kvm-aaf630a4dd27f8d6e7b4b4c3e44d537a310624f6.tar.gz qemu-kvm-aaf630a4dd27f8d6e7b4b4c3e44d537a310624f6.tar.bz2 qemu-kvm-aaf630a4dd27f8d6e7b4b4c3e44d537a310624f6.zip | |
Flush icache after dma operations for ia64
ia64 system depends on that platform issues snoop cycle to flush
icache for memory touched by DMA write operations, but virtual DMA
operations is emulated by memcpy, so use explict instrustions to flush
the related icache, otherwise, guest may use obsolete icache.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'dma-helpers.c')
| -rw-r--r-- | dma-helpers.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/dma-helpers.c b/dma-helpers.c index 712ed897f..d4fc077c0 100644 --- a/dma-helpers.c +++ b/dma-helpers.c @@ -160,6 +160,10 @@ static BlockDriverAIOCB *dma_bdrv_io( dbs->is_write = is_write; dbs->bh = NULL; qemu_iovec_init(&dbs->iov, sg->nsg); + /* + * DMA flushing is handled in dma_bdrv_cb() calling dma_bdrv_unmap() + * so we don't need to do that here. + */ dma_bdrv_cb(dbs, 0); if (!dbs->acb) { qemu_aio_release(dbs); |