diff options
| author | Tao Wu <lepton@google.com> | 2017-11-09 10:17:41 -0800 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2017-11-10 11:05:19 +0100 |
| commit | c53f5b89f19b3051384d202dd750d23fb38f0994 (patch) | |
| tree | 112bafa7e03b0aa3611a0a089228c09ba8b1b456 /hw | |
| parent | b0fbe46ad82982b289a44ee2495b59b0bad8a842 (diff) | |
| download | qemu-c53f5b89f19b3051384d202dd750d23fb38f0994.tar.gz | |
virtio-gpu: fix bug in host memory calculation.
The old code treats bits as bytes when calculating host memory usage.
Change it to be consistent with allocation logic in pixman library.
Signed-off-by: Tao Wu <lepton@google.com>
Message-Id: <20171109181741.31318-1-lepton@google.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/display/virtio-gpu.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 43bbe09ea0..274e365713 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -322,6 +322,18 @@ static pixman_format_code_t get_pixman_format(uint32_t virtio_gpu_format) } } +static uint32_t calc_image_hostmem(pixman_format_code_t pformat, + uint32_t width, uint32_t height) +{ + /* Copied from pixman/pixman-bits-image.c, skip integer overflow check. + * pixman_image_create_bits will fail in case it overflow. + */ + + int bpp = PIXMAN_FORMAT_BPP(pformat); + int stride = ((width * bpp + 0x1f) >> 5) * sizeof(uint32_t); + return height * stride; +} + static void virtio_gpu_resource_create_2d(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { @@ -366,7 +378,7 @@ static void virtio_gpu_resource_create_2d(VirtIOGPU *g, return; } - res->hostmem = PIXMAN_FORMAT_BPP(pformat) * c2d.width * c2d.height; + res->hostmem = calc_image_hostmem(pformat, c2d.width, c2d.height); if (res->hostmem + g->hostmem < g->conf.max_hostmem) { res->image = pixman_image_create_bits(pformat, c2d.width, @@ -1087,7 +1099,7 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, return -EINVAL; } - res->hostmem = PIXMAN_FORMAT_BPP(pformat) * res->width * res->height; + res->hostmem = calc_image_hostmem(pformat, res->width, res->height); res->addrs = g_new(uint64_t, res->iov_cnt); res->iov = g_new(struct iovec, res->iov_cnt); |