gpu passthrough fully working
This commit is contained in:
Siina Mashek
parent
e122ec58f9
commit
3f9b65389e
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@ -0,0 +1,12 @@
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app-emulation/qemu spice usbredir
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app-emulation/virt-manager gtk
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# required by app-emulation/virt-manager-2.2.1-r3::gentoo[gtk]
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# required by @gpu-passthrough
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# required by @selected
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# required by @world (argument)
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>=net-misc/spice-gtk-0.37-r2 usbredir gtk3
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# required by app-emulation/libvirt-6.8.0-r1::gentoo[virt-network]
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# required by app-emulation/libvirt-glib-3.0.0::gentoo
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# required by app-emulation/virt-manager-2.2.1-r3::gentoo
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# required by @gpu-passthrough (argument)
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>=net-dns/dnsmasq-2.82 script
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@ -0,0 +1,123 @@
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--- a/drivers/pci/quirks.c 2020-05-12 20:48:40.153152132 +0300
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+++ b/drivers/pci/quirks.c 2020-05-13 15:59:18.477619314 +0300
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@@ -4695,6 +4695,111 @@
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PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
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}
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+/*
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+* PCIe ACS Override
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+*/
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+static bool acs_on_downstream;
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+static bool acs_on_multifunction;
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+
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+#define NUM_ACS_IDS 16
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+struct acs_on_id {
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+ unsigned short vendor;
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+ unsigned short device;
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+};
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+static struct acs_on_id acs_on_ids[NUM_ACS_IDS];
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+static u8 max_acs_id;
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+
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+static __init int pcie_acs_override_setup(char *p)
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+{
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+ if (!p)
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+ return -EINVAL;
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+
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+ while (*p) {
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+ if (!strncmp(p, "downstream", 10))
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+ acs_on_downstream = true;
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+ if (!strncmp(p, "multifunction", 13))
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+ acs_on_multifunction = true;
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+ if (!strncmp(p, "id:", 3)) {
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+ char opt[5];
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+ int ret;
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+ long val;
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+
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+ if (max_acs_id >= NUM_ACS_IDS - 1) {
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+ pr_warn("Out of PCIe ACS override slots (%d)\n",
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+ NUM_ACS_IDS);
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+ goto next;
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+ }
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+
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+ p += 3;
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+ snprintf(opt, 5, "%s", p);
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+ ret = kstrtol(opt, 16, &val);
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+ if (ret) {
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+ pr_warn("PCIe ACS ID parse error %d\n", ret);
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+ goto next;
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+ }
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+ acs_on_ids[max_acs_id].vendor = val;
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+
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+ p += strcspn(p, ":");
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+ if (*p != ':') {
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+ pr_warn("PCIe ACS invalid ID\n");
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+ goto next;
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+ }
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+
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+ p++;
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+ snprintf(opt, 5, "%s", p);
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+ ret = kstrtol(opt, 16, &val);
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+ if (ret) {
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+ pr_warn("PCIe ACS ID parse error %d\n", ret);
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+ goto next;
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+ }
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+ acs_on_ids[max_acs_id].device = val;
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+ max_acs_id++;
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+ }
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+next:
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+ p += strcspn(p, ",");
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+ if (*p == ',')
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+ p++;
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+ }
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+
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+ if (acs_on_downstream || acs_on_multifunction || max_acs_id)
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+ pr_warn("Warning: PCIe ACS overrides enabled; This may allow non-IOMMU protected peer-to-peer DMA\n");
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+
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+ return 0;
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+}
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+
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+early_param("pcie_acs_override", pcie_acs_override_setup);
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+
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+static int pcie_acs_overrides(struct pci_dev *dev, u16 acs_flags)
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+{
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+ int i;
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+
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+ /* Never override ACS for legacy devices or devices with ACS caps */
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+ if (!pci_is_pcie(dev) ||
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+ pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS))
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+ return -ENOTTY;
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+
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+ for (i = 0; i < max_acs_id; i++)
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+ if (acs_on_ids[i].vendor == dev->vendor &&
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+ acs_on_ids[i].device == dev->device)
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+ return 1;
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+
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+ switch (pci_pcie_type(dev)) {
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+ case PCI_EXP_TYPE_DOWNSTREAM:
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+ case PCI_EXP_TYPE_ROOT_PORT:
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+ if (acs_on_downstream)
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+ return 1;
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+ break;
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+ case PCI_EXP_TYPE_ENDPOINT:
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+ case PCI_EXP_TYPE_UPSTREAM:
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+ case PCI_EXP_TYPE_LEG_END:
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+ case PCI_EXP_TYPE_RC_END:
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+ if (acs_on_multifunction && dev->multifunction)
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+ return 1;
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+ }
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+
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+ return -ENOTTY;
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+}
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+
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static const struct pci_dev_acs_enabled {
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u16 vendor;
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u16 device;
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@@ -4797,6 +4902,8 @@
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{ PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
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/* Zhaoxin Root/Downstream Ports */
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{ PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
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+ /* IOMMU ACS override patch */
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+ { PCI_ANY_ID, PCI_ANY_ID, pcie_acs_overrides },
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{ 0 }
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};
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@ -1,14 +1,10 @@
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# Libvirt & Qemu
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app-emulation/libvirt
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app-emulation/qemu
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app-emulation/virt-manager
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app-emulation/qemu spice
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app-emulation/virt-manager gtk
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sys-firmware/edk2-ovmf
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# Looking Glass
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app-emulation/spice-protocol
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dev-libs/nettle gmp
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#dev-util/cmake
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#media-libs/glu
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#media-libs/libsdl2
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media-libs/sdl2-ttf
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#sys-devel/binutils
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