diff options
| author | Adam Jackson <ajax@redhat.com> | 2018-05-30 11:46:46 -0400 |
|---|---|---|
| committer | Adam Jackson <ajax@nwnk.net> | 2019-07-10 14:53:51 +0000 |
| commit | 51a73f2fc2548d9b699d2a9c016bf5892c41d48a (patch) | |
| tree | a03c829cd60100dfe38b73bb9f06948af7512f41 | |
| parent | 53c7796e8ddc6aaaef79df8c852c0d9d151a8559 (diff) | |
| download | xorg-driver-xf86-video-vesa-51a73f2fc2548d9b699d2a9c016bf5892c41d48a.tar.gz | |
Disable shadow by default on known-virtual GPUs
Device memory is the same domain as host memory, in this case, so the
shadow just introduces more memcpy.
Signed-off-by: Adam Jackson <ajax@redhat.com>
| -rw-r--r-- | src/vesa.c | 35 |
1 files changed, 32 insertions, 3 deletions
@@ -854,9 +854,38 @@ VESAPreInit(ScrnInfoPtr pScrn, int flags) memcpy(pVesa->Options, VESAOptions, sizeof(VESAOptions)); xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, pVesa->Options); - /* Use shadow by default */ - pVesa->shadowFB = xf86ReturnOptValBool(pVesa->Options, OPTION_SHADOW_FB, - TRUE); + /* Use shadow by default, for non-virt hardware */ + if (!xf86GetOptValBool(pVesa->Options, OPTION_SHADOW_FB, &pVesa->shadowFB)) + { + switch (pVesa->pciInfo->vendor_id) { + case 0x1234: /* bochs vga (not in pci.ids) */ + case 0x15ad: /* vmware */ + case 0x1b36: /* qemu qxl */ + case 0x80ee: /* virtualbox */ + case 0xaaaa: /* parallels (not in pci.ids) */ + pVesa->shadowFB = FALSE; + break; + + case 0x1013: /* qemu's cirrus emulation */ + if (pVesa->pciInfo->subvendor_id == 0x1af4) + pVesa->shadowFB = FALSE; + else + pVesa->shadowFB = TRUE; + break; + + case 0x1414: /* microsoft hyper-v */ + if (pVesa->pciInfo->device_id == 0x5353) + pVesa->shadowFB = FALSE; + else + pVesa->shadowFB = TRUE; + break; + + default: + pVesa->shadowFB = TRUE; + break; + } + } + /* Use default refresh by default. Too many VBE 3.0 * BIOSes are incorrectly implemented. */ |