kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c, branch linux-7.1.y

drm/amdgpu: switch XGMI sysfs show helpers to sysfs_emit_at()

2026-03-17T14:38:59+00:00

The XGMI sysfs show helpers amdgpu_xgmi_show_num_hops() and amdgpu_xgmi_show_num_links() currently populate the output buffer with sprintf() and then call sysfs_emit(buf, "%s\n", buf) to append the final newline. Convert both helpers to use sysfs_emit_at() while tracking the current offset. This keeps buffer construction in the sysfs helpers, avoids feeding the output buffer back into the final formatted write, and matches the style already used by amdgpu_xgmi_show_connected_port_num(). Signed-off-by: David Baum Signed-off-by: Alex Deucher

drm/amdgpu: Use get_smn_base in aqua_vanjaram

2026-03-02T21:46:48+00:00

Use get_smn_base interface to get IP die instance's base offset in aqua_vanjaram. encode_ext_smn_addressing is not used. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: Add xgmi link status for VFs

2026-02-23T19:39:13+00:00

Xgmi link status is unavailable in guest. This patch returns AMDGPU_XGMI_LINK_NA for VFs. Signed-off-by: Simon Louis Signed-off-by: Lijo Lazar Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drm/amdgpu: Move xgmi status to interface header

2026-02-12T20:22:00+00:00

These definitions are used by user APIs. Signed-off-by: Lijo Lazar Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher

drm/amdgpu: statistic xgmi training error count

2026-02-03T21:43:46+00:00

Report xgmi training error uncorrectable error count. Signed-off-by: Stanley.Yang Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher

drm/amdgpu: Refactor sriov xgmi topology filling to common code

2025-11-14T16:27:29+00:00

amdgpu_xgmi_fill_topology_info and psp_xgmi_reflect_topology_info perform the same logic of copying topology info of one node to every other node in the hive. Instead of having two functions that purport to do the same thing, this refactoring moves the logic of the fill function to the reflect function and adds reflecting port number info as well for complete functionality. Signed-off-by: Will Aitken Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: Avoid xgmi register access

2025-11-14T16:26:58+00:00

On single GPU systems, avoid accesses to XGMI link registers. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: Check if AID is active before access

2025-11-12T02:54:18+00:00

Access XGMI registers only if AID is active. Signed-off-by: Lijo Lazar Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher