D45342.id157703.diff
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D45342.id157703.diff
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	diff --git a/usr.sbin/bhyve/amd64/pci_gvt-d.c b/usr.sbin/bhyve/amd64/pci_gvt-d.c
	--- a/usr.sbin/bhyve/amd64/pci_gvt-d.c
	+++ b/usr.sbin/bhyve/amd64/pci_gvt-d.c
	@@ -43,6 +43,41 @@
	#define GVT_D_MAP_OPREGION 1
	#define GVT_D_MAP_VBT 2

	+static uint64_t
	+gvt_d_dsmbase_read(struct pci_devinst *pi, int baridx __unused, uint64_t offset,
	+ int size)
	+{
	+ switch (size) {
	+ case 1:
	+ return (pci_get_cfgdata8(pi, PCIR_BDSM_GEN11 + offset));
	+ case 2:
	+ return (pci_get_cfgdata16(pi, PCIR_BDSM_GEN11 + offset));
	+ case 4:
	+ return (pci_get_cfgdata32(pi, PCIR_BDSM_GEN11 + offset));
	+ default:
	+ return (UINT64_MAX);
	+ }
	+}
	+
	+static void
	+gvt_d_dsmbase_write(struct pci_devinst *pi, int baridx __unused,
	+ uint64_t offset, int size, uint64_t val)
	+{
	+ switch (size) {
	+ case 1:
	+ pci_set_cfgdata8(pi, PCIR_BDSM_GEN11 + offset, val);
	+ break;
	+ case 2:
	+ pci_set_cfgdata16(pi, PCIR_BDSM_GEN11 + offset, val);
	+ break;
	+ case 4:
	+ pci_set_cfgdata32(pi, PCIR_BDSM_GEN11 + offset, val);
	+ break;
	+ default:
	+ break;
	+ }
	+}
	+
	static int
	set_bdsm_gen3(struct pci_devinst *const pi, vm_paddr_t bdsm_gpa)
	{
	@@ -85,6 +120,14 @@
	return (error);
	}

	+ /* Protect the BDSM register in MMIO space. */
	+ error = passthru_set_bar_handler(sc, 0, 0x1080C0, sizeof(uint64_t),
	+ gvt_d_dsmbase_read, gvt_d_dsmbase_write);
	+ if (error) {
	+ warnx("%s: Failed to setup handler for BDSM mirror!\n", __func__);
	+ return (error);
	+ }
	+
	return (0);
	}