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vga: fixes for cirrus and virtio-gpu. 

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Merge remote-tracking branch 'remotes/kraxel/tags/vga-20200904-pull-request' into staging

vga: fixes for cirrus and virtio-gpu.

# gpg: Signature made Fri 04 Sep 2020 12:26:36 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/vga-20200904-pull-request:
  cirrus: handle wraparound in cirrus_invalidate_region
  virtio-gpu: fix unmap the already mapped items

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2020-09-07 13:27:20 +01:00
parent 7c37270b3f 5fcf787582
commit 62f9256052
2 changed files with 13 additions and 4 deletions
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12
hw/display/cirrus_vga.c
View File

@ -640,10 +640,16 @@ static void cirrus_invalidate_region(CirrusVGAState * s, int off_begin,
}
for (y = 0; y < lines; y++) {
off_cur = off_begin;
off_cur = off_begin & s->cirrus_addr_mask;
off_cur_end = ((off_cur + bytesperline - 1) & s->cirrus_addr_mask) + 1;
assert(off_cur_end >= off_cur);
memory_region_set_dirty(&s->vga.vram, off_cur, off_cur_end - off_cur);
if (off_cur_end >= off_cur) {
memory_region_set_dirty(&s->vga.vram, off_cur, off_cur_end - off_cur);
} else {
/* wraparound */
memory_region_set_dirty(&s->vga.vram, off_cur,
s->cirrus_addr_mask + 1 - off_cur);
memory_region_set_dirty(&s->vga.vram, 0, off_cur_end);
}
off_begin += off_pitch;
}
}

5
hw/display/virtio-gpu.c
View File

@ -646,9 +646,9 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
uint64_t a = le64_to_cpu(ents[i].addr);
uint32_t l = le32_to_cpu(ents[i].length);
hwaddr len = l;
(*iov)[i].iov_len = l;
(*iov)[i].iov_base = dma_memory_map(VIRTIO_DEVICE(g)->dma_as,
a, &len, DMA_DIRECTION_TO_DEVICE);
(*iov)[i].iov_len = len;
if (addr) {
(*addr)[i] = a;
}
@ -656,6 +656,9 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
" resource %d element %d\n",
__func__, ab->resource_id, i);
if ((*iov)[i].iov_base) {
i++; /* cleanup the 'i'th map */
}
virtio_gpu_cleanup_mapping_iov(g, *iov, i);
g_free(ents);
*iov = NULL;