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drm/amdgpu: Remove arbitrary number of contexts limitation

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There is no need for an arbitrary limit to number of contexts userspace
can be allowed to create. Remove the AMDGPU_VM_MAX_NUM_CTX (4096) and
allow for full 32-bit of handles to be allocated.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tvrtko Ursulin 2026-06-01 15:08:23 +01:00 committed by Alex Deucher
parent 1b5e413713
commit 251b67e82d
2 changed files with 3 additions and 4 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@ -272,7 +272,6 @@ extern int amdgpu_ptl;
extern uint amdgpu_hdmi_hpd_debounce_delay_ms;
#define AMDGPU_VM_MAX_NUM_CTX 4096
#define AMDGPU_SG_THRESHOLD (256*1024*1024)
#define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000
#define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */

6
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
View File

@ -505,14 +505,14 @@ static int amdgpu_ctx_alloc(struct amdgpu_device *adev,
return -ENOMEM;
mutex_lock(&mgr->lock);
r = idr_alloc(&mgr->ctx_handles, ctx, 1, AMDGPU_VM_MAX_NUM_CTX, GFP_KERNEL);
if (r < 0) {
*id = 1;
r = idr_alloc_u32(&mgr->ctx_handles, ctx, id, UINT_MAX, GFP_KERNEL);
if (r) {
mutex_unlock(&mgr->lock);
kfree(ctx);
return r;
}
*id = (uint32_t)r;
r = amdgpu_ctx_init(mgr, priority, filp, ctx);
if (r) {
idr_remove(&mgr->ctx_handles, *id);