D5739.id14598.diff
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D5739.id14598.diff
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	Index: sys/dev/vt/hw/vga/vt_vga.c
	===================================================================
	--- sys/dev/vt/hw/vga/vt_vga.c
	+++ sys/dev/vt/hw/vga/vt_vga.c
	@@ -1229,7 +1229,16 @@
	bus_space_map(sc->vga_reg_tag, VGA_REG_BASE, VGA_REG_SIZE, 0,
	&sc->vga_reg_handle);

	- TUNABLE_INT_FETCH("hw.vga.textmode", &textmode);
	+ /*
	+ * If "hw.vga.textmode" is not set and we're running on hypervisor,
	+ * we use text mode by default, this is because when we're on
	+ * hypervisor, vt(4) is usually much slower in graphics mode than
	+ * in text mode, especially when we're on Hyper-V.
	+ */
	+ if (!TUNABLE_INT_FETCH("hw.vga.textmode", &textmode) &&
	+ vm_guest != VM_GUEST_NO)
	+ textmode = 1;
	+
	if (textmode) {
	vd->vd_flags \|= VDF_TEXTMODE;
	vd->vd_width = 80;