Only the display controller part is created automatically on PCI
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Message-id: 647d292c6f5abba8b2a614687229949b5dcb864e.1492787889.git.balaton@eik.bme.hu
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Do not use the base address to access data in local memory. This is in
preparation to allow chip connected via PCI where base address depends
on where the BAR is mapped so it will be unknown.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Message-id: 79dab21bc6ec4d563aabf265c3bab40e2e95aae8.1492787889.git.balaton@eik.bme.hu
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Adding vmstate saving is not in this patch because the state structure
will be changed in further patches, then another patch will add
vmstate descriptor after those changes.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Message-id: a32b7fc981a20205f96d530d8e958f12ace1104c.1492787889.git.balaton@eik.bme.hu
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Previous to the existence of load_image_mr(), the only way to load in the
FCode ROM image was to pass in its physical address via qdev properties
and use load_image_targphys().
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Rather than calling memory_region_set_dirty() directly, make sure that we call
tcx_set_dirty() instead. This ensures that the 24-bit plane and cplane are
also invalidated correctly.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
As all surfaces in QEMU are now either shared or 32-bit ARGB regardless of
the guest depth, remove all non-32-bit primitives from tcx_update_display()
and consequence their implementation which are no longer required.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Now that page alignment is handled by the memory API, there is no need to
duplicate the code 4 times (4 * 1024 == 4096 == TARGET_PAGE_SIZE).
Finally we have now removed all traces of TARGET_PAGE_SIZE.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Now that page alignment is handled by the memory API, there is no need to
duplicate the code 4 times (4 * 1024 == 4096 == TARGET_PAGE_SIZE).
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Since all of the tcx_*_dirty() functions now calculate the 24-bit and
cplane offsets themselves from the base address, these variables are no
longer needed.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
This can now be used by both the 8-bit and 24-bit display code, so rename
to tcx_check_dirty().
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
This can now be used by both the 8-bit and 24-bit display code, so rename
to tcx_check_dirty().
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Previous to the existence of load_image_mr(), the only way to load in the
FCode ROM image was to pass in its physical address via qdev properties
and use load_image_targphys().
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
The code was incorrectly calculating the end address rather than the size of
the required region.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
This was an artifact from very early versions of the code from before the
memory API and is no longer needed.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Since commit cd958edb1f, same size console resize is skipped. This
change broke QXL incoming migration in VGA mode,
qemu_spice_display_switch() is no longer called during qxl_post_load(),
because default message surface is of the same size, and during
displaychangelistener registration, PCIQXLDevice.mode is
QXL_MODE_UNDEFINED. This triggers a later crash on refresh:
==2634== Invalid read of size 4
==3516== at 0x65F3050: pixman_image_get_data (in /usr/lib64/libpixman-1.so.0.34.0)
==3516== by 0x6F0CEB: qemu_spice_create_update (spice-display.c:215)
==3516== by 0x6F1CC7: qemu_spice_display_refresh (spice-display.c:502)
==3516== by 0x58CF77: display_refresh (qxl.c:1948)
==3516== by 0x6E8084: do_safe_dpy_refresh (console.c:1591)
==3516== by 0x6E80D5: dpy_refresh (console.c:1604)
==3516== by 0x6E4508: gui_update (console.c:201)
==3516== by 0x81898E: timerlist_run_timers (qemu-timer.c:536)
==3516== by 0x8189D6: qemu_clock_run_timers (qemu-timer.c:547)
==3516== by 0x818D98: qemu_clock_run_all_timers (qemu-timer.c:662)
==3516== by 0x81952A: main_loop_wait (main-loop.c:514)
==3516== by 0x4ADD29: main_loop (vl.c:1898)
One way to solve this is to explicitely call qemu_spice_display_switch()
on entering VGA mode, which is called during qxl_post_load().
Fixes:
"null pointer access on migration resume of systemrescuecd boot menu with qxl-vga"
https://bugs.launchpad.net/qemu/+bug/1679126https://bugzilla.redhat.com/show_bug.cgi?id=1438566
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20170406120513.638-4-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Should be "c" not "col". The macro is used with "col" as third parameter
everywhere, so this tyops doesn't break something.
Fixes: 026aeffcb4
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 1490168303-24588-1-git-send-email-kraxel@redhat.com
... and drop OPENGL_CFLAGS from Makefiles.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1490079888-29029-1-git-send-email-kraxel@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Change Makefile.objs to use CONFIG_XEN instead of CONFIG_XEN_BACKEND, so
that the Xen backends are only built for targets that support Xen.
Set CONFIG_XEN in the toplevel Makefile to ensure that files that are
built only once pick up Xen support properly.
Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Tested-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
CC: pbonzini@redhat.com
CC: peter.maydell@linaro.org
CC: rth@twiddle.net
CC: stefanha@redhat.com
Message-Id: <1489694518-16978-1-git-send-email-sstabellini@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The switch from pointers to addresses (commit
026aeffcb4 and
ffaf857778) added
a off-by-one bug to 16bit backward blits. Fix.
Reported-by: 李强 <liqiang6-s@360.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 1489735296-19047-1-git-send-email-kraxel@redhat.com
Does basically the same as "cirrus: stop passing around dst pointers in
the blitter", just for the src pointer instead of the dst pointer.
For the src we have to care about cputovideo blits though and fetch the
data from s->cirrus_bltbuf instead of vga memory. The cirrus_src*()
helper functions handle that.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1489584487-3489-1-git-send-email-kraxel@redhat.com
Instead pass around the address (aka offset into vga memory). Calculate
the pointer in the rop_* functions, after applying the mask to the
address, to make sure the address stays within the valid range.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1489574872-8679-1-git-send-email-kraxel@redhat.com
off_cur_end is exclusive, so off_cur_end == cirrus_addr_mask is valid.
Fix calculation to make sure to allow that, otherwise the assert added
by commit f153b563f8 can trigger for valid
blits.
Test case: boot windows nt 4.0
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1489579606-26020-1-git-send-email-kraxel@redhat.com
Ok, we have this beast in the cirrus code which is not used at all by
modern guests, except when you try to find security holes in qemu. So,
add an option to disable blitter altogether. Guests released within
the last ten years should not show any rendering issues if you turn off
blitter support.
There are no known bugs in the cirrus blitter code. But in the past we
hoped a few times already that we've finally nailed the last issue. So
having some easy way to mitigate in case yet another blitter issue shows
up certainly makes me sleep a bit better at night.
For completeness: The by far better way to mitigate is to switch away
from cirrus and use stdvga instead. Or something more modern like
virtio-vga in case your guest has support for it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1489494540-15745-1-git-send-email-kraxel@redhat.com
Quoting cirrus source code:
Follow real hardware, cirrus card emulated has 4 MB video memory.
Also accept 8 MB/16 MB for backward compatibility.
So just use 4MB by default. We decided to leave that at 8MB by default
a while ago, for live migration compatibility reasons. But we have
compat properties to handle that, so that isn't a compeling reason.
This also removes some sanity check inconsistencies in the cirrus code.
Some places check against the allocated video memory, some places check
against the 4MB physical hardware has. Guest code can trigger asserts
because of that.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1489494514-15606-1-git-send-email-kraxel@redhat.com
There is a special code path (dpy_gfx_copy) to allow graphic emulation
notify user interface code about bitblit operations carryed out by
guests. It is supported by cirrus and vnc server. The intended purpose
is to optimize display scrolls and just send over the scroll op instead
of a full display update.
This is rarely used these days though because modern guests simply don't
use the cirrus blitter any more. Any linux guest using the cirrus drm
driver doesn't. Any windows guest newer than winxp doesn't ship with a
cirrus driver any more and thus uses the cirrus as simple framebuffer.
So this code tends to bitrot and bugs can go unnoticed for a long time.
See for example commit "3e10c3e vnc: fix qemu crash because of SIGSEGV"
which fixes a bug lingering in the code for almost a year, added by
commit "c7628bf vnc: only alloc server surface with clients connected".
Also the vnc server will throttle the frame rate in case it figures the
network can't keep up (send buffers are full). This doesn't work with
dpy_gfx_copy, for any copy operation sent to the vnc client we have to
send all outstanding updates beforehand, otherwise the vnc client might
run the client side blit on outdated data and thereby corrupt the
display. So this dpy_gfx_copy "optimization" might even make things
worse on slow network links.
Lets kill it once for all.
Oh, and one more reason: Turns out (after writing the patch) we have a
security bug in that code path ...
Fixes: CVE-2016-9603
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1489494419-14340-1-git-send-email-kraxel@redhat.com
check the validity of parameters in cirrus_bitblt_rop_fwd_transp_xxx
and cirrus_bitblt_rop_fwd_xxx to avoid the OOB read which causes qemu Segmentation fault.
After the fix, we will touch the assert in
cirrus_invalidate_region:
assert(off_cur_end >= off_cur);
Signed-off-by: fangying <fangying1@huawei.com>
Signed-off-by: hangaohuai <hangaohuai@huawei.com>
Message-id: 20170314063919.16200-1-hangaohuai@huawei.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Make sure we don't leave guest_cursor pointing into nowhere. This might
lead to (rare) live migration failures, due to target trying to restore
the cursor from the stale pointer.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1421788
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 1488789111-27340-1-git-send-email-kraxel@redhat.com
Don't truncate the multiplication and do a 64 bit one instead
because the result is stored in a 64 bit variable.
This fixes a similar coverity warning to commits 237a8650d6 and
4382fa6554, in a similar way, and is the final third of the fix for
coverity CID 1167561 (hopefully!).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Michael Walle <michael@walle.cc>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
We'll add a variant which accepts dmabufs soon. Change
the name so we can easily disturgish the two variants.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 1487669841-13668-2-git-send-email-kraxel@redhat.com
CIRRUS_BLTMODE_MEMSYSSRC blits do NOT check blit destination
and blit width, at all. Oops. Fix it.
Security impact: high.
The missing blit destination check allows to write to host memory.
Basically same as CVE-2014-8106 for the other blit variants.
Cc: qemu-stable@nongnu.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The member VMStateField.start is used for two things, partial data
migration for VBUFFER data (basically provide migration for a
sub-buffer) and for locating next in QTAILQ.
The implementation of the VBUFFER feature is broken when VMSTATE_ALLOC
is used. This however goes unnoticed because actually partial migration
for VBUFFER is not used at all.
Let's consolidate the usage of VMStateField.start by removing support
for partial migration for VBUFFER.
Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Message-Id: <20170203175217.45562-1-pasic@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This reverts commit 5858dd1801.
Conflicts:
hw/display/cirrus_vga.c
Cc: Wolfgang Bumiller <w.bumiller@proxmox.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Message-id: 1486645341-5010-2-git-send-email-kraxel@redhat.com
The blit_region_is_unsafe checks don't work correctly for the
patterncopy source. It's a fixed-sized region, which doesn't
depend on cirrus_blt_{width,height}. So go do the check in
cirrus_bitblt_common_patterncopy instead, then tell blit_is_unsafe that
it doesn't need to verify the source. Also handle the case where we
blit from cirrus_bitbuf correctly.
This patch replaces 5858dd1801.
Security impact: I think for the most part error on the safe side this
time, refusing blits which should have been allowed.
Only exception is placing the blit source at the end of the video ram,
so cirrus_blt_srcaddr + 256 goes beyond the end of video memory. But
even in that case I'm not fully sure this actually allows read access to
host memory. To trick the commit 5858dd18 security checks one has to
pick very small cirrus_blt_{width,height} values, which in turn implies
only a fraction of the blit source will actually be used.
Cc: Wolfgang Bumiller <w.bumiller@proxmox.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Message-id: 1486645341-5010-1-git-send-email-kraxel@redhat.com
When the guest sends VIRTIO_GPU_CMD_RESOURCE_UNREF without detaching the
backing storage beforehand (VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING)
we'll leak memory.
This patch fixes it for 3d mode, simliar to the 2d mode fix in commit
"b8e2392 virtio-gpu: call cleanup mapping function in resource destroy".
Reported-by: 李强 <liqiang6-s@360.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1485167210-4757-1-git-send-email-kraxel@redhat.com
In virtio_gpu_set_scanout function, when creating the 'rect'
its refcount is set to 2, by pixman_image_create_bits and
qemu_create_displaysurface_pixman function. This can lead
a memory leak issues. This patch avoid this issue.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 5884626f.5b2f6b0a.1bfff.3037@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When doing bitblt copy in backward mode, we should minus the
blt width first just like the adding in the forward mode. This
can avoid the oob access of the front of vga's vram.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
{ kraxel: with backward blits (negative pitch) addr is the topmost
address, so check it as-is against vram size ]
Cc: qemu-stable@nongnu.org
Cc: P J P <ppandit@redhat.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Wolfgang Bumiller <w.bumiller@proxmox.com>
Fixes: d3532a0db0 (CVE-2014-8106)
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1485938101-26602-1-git-send-email-kraxel@redhat.com
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Apply the cirrus_addr_mask to cirrus_blt_dstaddr and cirrus_blt_srcaddr
right after assigning them, in cirrus_bitblt_start(), instead of having
this all over the place in the cirrus code, and missing a few places.
Reported-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1485338996-17095-1-git-send-email-kraxel@redhat.com
