linux-next.git/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c, branch master

drm/amdgpu: Gate debugfs MMIO access on kernel lockdown

2026-06-17T19:51:36+00:00

amdgpu_regs, amdgpu_regs2, and related debugfs nodes allow arbitrary MMIO read/write via RREG32/WREG32 without checking security_locked_down(). On kernel_lockdown=integrity systems this bypasses the same restrictions as /dev/mem and PCI config space sysfs. Check LOCKDOWN_PCI_ACCESS (matching pci-sysfs) at the entry of every debugfs handler that performs direct register access. v2: Use consistent check as per previous check to use LOCKDOWN_DEBUGFS(Lijo) v3: Do not create any entry from amdgpu_debugfs_regs_init() if LOCKDOWN_PCI_ACCESS is active and log once. (Lijo) Signed-off-by: Asad Kamal Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: Add guest driver CUID support

2026-05-18T22:13:28+00:00

v3: improve the coding style. v2: use debugfs_create_x64 and debugfs_create_x8 to create node. v1: 1. Add guest driver CUID support 2. Do not expose vf index(variable "fcn_idx") to customers, replace the fcn_idx with pad. Only expose the unitid to customers. background: Change fcn_idx to pad, VF index won't expose to guest vm. Introduce a new unitid field as the VF identifier to replace the VF index: 1).unitid is assigned by the host driver 2).It is delivered to the guest via the pf2vf message 3).The application or umd can retrieve united from the sysfs node Signed-off-by: chong li Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: plumb timedout fence through to force completion

2026-05-11T20:15:31+00:00

When we do a full adapter reset, if we know the timedout fence mark the fence with -ETIME rather than -ECANCELED so it gets properly handled by userspace. v2: rebase Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Add amdgpu_regs_pcie64 debugfs node

2026-03-23T18:16:28+00:00

Add amdgpu_regs_pcie64 debugfs node to read/write 64bit PCIE registers. Signed-off-by: Stanley.Yang Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: push userq debugfs function in amdgpu_debugfs files

2026-03-06T21:34:19+00:00

Debugfs files for amdgpu are better to be handled in the dedicated amdgpu_debugfs.c/.h files. Signed-off-by: Sunil Khatri Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Add didt method to register block

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

Move didt callbacks to register access block. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: Add smc method to register block

2026-03-02T21:42:38+00:00

Define register access block which consolidates different register access methods. Add smc method to register access block. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang 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/amd: Convert DRM_() to drm_()

2026-01-05T21:59:55+00:00

The drm_*() macros include the device which is helpful for debugging issues in multi-GPU systems. Signed-off-by: Mario Limonciello (AMD) Reviewed-by: Aurabindo Pillai Signed-off-by: Alex Deucher