[PATCH] drm/amd/amdgpu: Only reserve vram for firmware with vega10 MS_HYPERV host.

[Yongqiang Sun]

Fixes: 8011a76ad370
("drm/amdgpu: Add stolen reserved memory for MI25 SRIOV.")

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.

Signed-off-by: Yongqiang Sun <yongqiang....@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index a66a0881a934..3e9582c245bb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -25,6 +25,7 @@
  */
 
 #include <linux/io-64-nonatomic-lo-hi.h>
+#include <asm/hypervisor.h>
 
 #include "amdgpu.h"
 #include "amdgpu_gmc.h"
@@ -647,11 +648,11 @@ void amdgpu_gmc_get_vbios_allocations(struct 
amdgpu_device *adev)
        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:
-- 
2.25.1