kernel/drivers/gpu/drm/i915/gvt/fb_decoder.c, branch linux-4.17.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-4.17.y2018-03-30T06:47:19Zdrm/i915/gvt: Delete redundant error message in fb_decode.c2018-03-30T06:47:19ZXiong Zhangxiong.y.zhang@intel.com2018-03-27T21:30:13Zurn:sha1:a733390f9a79876635013e57da25f91b6e78ffe6
Much error message exist in host dmesg when guest boot up with local
display enabled.
[ 167.680011] gvt: vgpu 1: invalid range gmadr 0x0 size 0x0
[ 167.680013] gvt: vgpu 1: invalid gma address: 0
The second error line duplicate with the first error line, so this
patch remove this redundant error message and make the next error
message much clearer.
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drm/i915/gvt: cleanup usage for typed mmio reg vs. offset2017-12-22T08:33:03ZZhenyu Wangzhenyuw@linux.intel.com2017-12-19T05:02:51Zurn:sha1:90551a1296d4dbe0dccc4c3cb5e57e7f2c929009
We had previous hack that tried to accept either i915_reg_t or offset
value to access vGPU virtual/shadow regs which broke that purpose to
be type safe in context. This one trys to explicitly separate the usage
of typed mmio reg with real offset.
Old vgpu_vreg(offset) helper is used only for offset now with new
vgpu_vreg_t(reg) is used for i915_reg_t only. Convert left usage
of that to new helper.
Also fixed left KASAN warning issues caused by previous hack.
v2: rebase, fixup against recent mmio switch change
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drm/i915/gvt/fb_decoder: Fix out-of-bounds read2017-12-11T09:18:39ZGustavo A. R. Silvagarsilva@embeddedor.com2017-12-09T06:37:59Zurn:sha1:461bd6227ede277138bf33c2156b6ebd1fba04c2
In case function skl_format_to_drm returns -EINVAL, fmt turns into a huge
number as fmt is of type u32, hence there is an out-of-bounds read when
using fmt as an index for array skl_pixel_formats at line 225:
plane->bpp = skl_pixel_formats[fmt].bpp;
Fix this by comparing the value returned by function skl_format_to_drm
against the size of array skl_pixel_formats, so in case it is greater than
or equal to the number of items contained in skl_pixel_formats, print an
error message and return -EINVAL.
Addresses-Coverity-ID: 1462495
Addresses-Coverity-ID: 1462502 ("Out-of-bounds read")
Fixes: 9f31d1063b43 ("drm/i915/gvt: Add framebuffer decoder support")
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drm/i915/gvt: Introduce KBL to dma-buf on Gvt-g2017-12-04T03:24:34ZTina Zhangtina.zhang@intel.com2017-11-28T05:50:42Zurn:sha1:4a136d590bd4c579bb3df154363a3e5b51cb36ce
This patch introduces KBL platform to dma-buf on Gvt-g.
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drm/i915/gvt: Add framebuffer decoder support2017-12-04T03:24:33ZTina Zhangtina.zhang@intel.com2017-11-23T08:26:32Zurn:sha1:9f31d1063b434c2d54317461d78285b08538c01a
This patch is to introduce the framebuffer decoder which can decode guest
OS's framebuffer information, including primary, cursor and sprite plane.
v16:
- rebase to 4.14.0-rc6.
v14:
- refine pixel format table. (Zhenyu)
v9:
- move drm format change to a separate patch. (Xiaoguang)
v8:
- fix a bug in decoding primary plane. (Tina)
v7:
- refine framebuffer decoder code. (Zhenyu)
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>