drm/amd/amdgpu: Only reserve vram for firmware with vega9 MS_HYPERV host.

driver loading failed on VEGA10 SRIOV VF with linux host due to a wide
range of stolen reserved vram.
Since VEGA10 SRIOV VF need to reserve vram for firmware with windows
Hyper_V host specifically, check hypervisor type to only reserve
memory for it, and the range of the reserved vram can be limited
to between 5M-7M area.

Fixes: faad5ccac1eaae ("drm/amdgpu: Add stolen reserved memory for MI25 SRIOV.")
Signed-off-by: Yongqiang Sun <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c

···
  */
 
 #include <linux/io-64-nonatomic-lo-hi.h>
+#include <asm/hypervisor.h>
 
 #include "amdgpu.h"
 #include "amdgpu_gmc.h"
···
 	case CHIP_VEGA10:
 		adev->mman.keep_stolen_vga_memory = true;
 		/*
-		 * VEGA10 SRIOV VF needs some firmware reserved area.
+		 * VEGA10 SRIOV VF with MS_HYPERV host needs some firmware reserved area.
 		 */
-		if (amdgpu_sriov_vf(adev)) {
-			adev->mman.stolen_reserved_offset = 0x100000;
-			adev->mman.stolen_reserved_size = 0x600000;
+		if (amdgpu_sriov_vf(adev) && hypervisor_is_type(X86_HYPER_MS_HYPERV)) {
+			adev->mman.stolen_reserved_offset = 0x500000;
+			adev->mman.stolen_reserved_size = 0x200000;
 		}
 		break;
 	case CHIP_RAVEN: