kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h, branch v6.19.11

drm/amdgpu: Add lock to serialize sriov command execution

2025-11-14T16:28:07+00:00

Add lock to serialize sriov command execution. Signed-off-by: YiPeng Chai Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: Update headers for sriov xgmi ext peer link support feature flag

2025-11-14T16:27:33+00:00

Adds new sriov msg flag to match host, feature flag in the amdgim enum, and a wrapper macro to check it. Signed-off-by: Will Aitken Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: Fix pointer casts when reading dynamic region sizes

2025-10-28T13:55:16+00:00

The function amdgpu_virt_get_dynamic_data_info() writes a 64-bit size value. In two places (amdgpu_bios.c and amdgpu_discovery.c), the code passed the address of a smaller variable by casting it to u64 *, which is unsafe. This could make the function write more bytes than the smaller variable can hold, possibly overwriting nearby memory. Reported by static analysis tools. v2: Dynamic region size comes from the host (SR-IOV setup) and is always fixed to 5 MB. (Lijo/Ellen) 5 MB easily fits inside a 32-bit value, so using a 64-bit type is not needed. It also avoids extra type casts Fixes: b4a8fcc7826a ("drm/amdgpu: Add logic for VF ipd and VF bios to init from dynamic crit_region offsets") Reported by: Dan Carpenter Cc: Ellen Pan Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: Add logic for VF ipd and VF bios to init from dynamic crit_region offsets

2025-10-20T22:28:11+00:00

1. Added VF logic in amdgpu_virt to init IP discovery using the offsets from dynamic(v2) critical regions; 2. Added VF logic in amdgpu_virt to init bios image using the offsets from dynamic(v2) critical regions; Signed-off-by: Ellen Pan Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: Introduce SRIOV critical regions v2 during VF init

2025-10-20T22:28:05+00:00

1. Introduced amdgpu_virt_init_critical_region during VF init. - VFs use init_data_header_offset and init_data_header_size_kb transmitted via PF2VF mailbox to fetch the offset of critical regions' offsets/sizes in VRAM and save to adev->virt.crit_region_offsets and adev->virt.crit_region_sizes_kb. Signed-off-by: Ellen Pan Reviewed-by: Alex Deucher Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: Add SRIOV crit_region_version support

2025-10-20T22:27:58+00:00

1. Added enum amd_sriov_crit_region_version to support multi versions 2. Added logic in SRIOV mailbox to regonize crit_region version during req_gpu_init_data Signed-off-by: Ellen Pan Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: Introduce VF critical region check for RAS poison injection

2025-09-18T13:43:02+00:00

The SRIOV guest send requet to host to check whether the poison injection address is in VF critical region or not via mabox. Signed-off-by: Xiang Liu Reviewed-by: Shravan Kumar Gande Signed-off-by: Alex Deucher

drm/amdgpu: Add virtual device capabilities

2025-09-15T20:55:48+00:00

Add a member to define the capabilities of virtual device. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: refactor bad_page_work for corner case handling

2025-08-15T17:07:30+00:00

When a poison is consumed on the guest before the guest receives the host's poison creation msg, a corner case may occur to have poison_handler complete processing earlier than it should to cause the guest to hang waiting for the req_bad_pages reply during a VF FLR, resulting in the VM becoming inaccessible in stress tests. To fix this issue, this patch refactored the mailbox sequence by seperating the bad_page_work into two parts req_bad_pages_work and handle_bad_pages_work. Old sequence: 1.Stop data exchange work 2.Guest sends MB_REQ_RAS_BAD_PAGES to host and keep polling for IDH_RAS_BAD_PAGES_READY 3.If the IDH_RAS_BAD_PAGES_READY arrives within timeout limit, re-init the data exchange region for updated bad page info else timeout with error message New sequence: req_bad_pages_work: 1.Stop data exhange work 2.Guest sends MB_REQ_RAS_BAD_PAGES to host Once Guest receives IDH_RAS_BAD_PAGES_READY event handle_bad_pages_work: 3.re-init the data exchange region for updated bad page info Signed-off-by: Chenglei Xie Reviewed-by: Shravan Kumar Gande Signed-off-by: Alex Deucher

drm/amdgpu: Check SQ_CONFIG register support on SRIOV

2025-07-16T20:14:21+00:00

On SRIOV environments, check if RLCG supports SQ_CONFIG register programming. Signed-off-by: Tony Yi Reviewed-by: Zhigang Luo Signed-off-by: Alex Deucher