From: Daniel Vetter <daniel@ffwll.ch>
To: Jason Ekstrand <jason@jlekstrand.net>
Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 24/27] drm/i915/gem: Don't allow changing the engine set on running contexts
Date: Wed, 5 May 2021 11:49:46 +0200 [thread overview]
Message-ID: <YJJqOpeAazKF5jFd@phenom.ffwll.local> (raw)
In-Reply-To: <20210503155748.1961781-25-jason@jlekstrand.net>
On Mon, May 03, 2021 at 10:57:45AM -0500, Jason Ekstrand wrote:
> Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Again needs some commit message, with that:
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
> drivers/gpu/drm/i915/gem/i915_gem_context.c | 304 --------------------
> 1 file changed, 304 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> index ad6e98d8a4fbd..6e5828fe1a792 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> @@ -1823,306 +1823,6 @@ static int set_sseu(struct i915_gem_context *ctx,
> return ret;
> }
>
> -struct set_engines {
> - struct i915_gem_context *ctx;
> - struct i915_gem_engines *engines;
> -};
> -
> -static int
> -set_engines__load_balance(struct i915_user_extension __user *base, void *data)
> -{
> - struct i915_context_engines_load_balance __user *ext =
> - container_of_user(base, typeof(*ext), base);
> - const struct set_engines *set = data;
> - struct drm_i915_private *i915 = set->ctx->i915;
> - struct intel_engine_cs *stack[16];
> - struct intel_engine_cs **siblings;
> - struct intel_context *ce;
> - struct intel_sseu null_sseu = {};
> - u16 num_siblings, idx;
> - unsigned int n;
> - int err;
> -
> - if (!HAS_EXECLISTS(i915))
> - return -ENODEV;
> -
> - if (intel_uc_uses_guc_submission(&i915->gt.uc))
> - return -ENODEV; /* not implement yet */
> -
> - if (get_user(idx, &ext->engine_index))
> - return -EFAULT;
> -
> - if (idx >= set->engines->num_engines) {
> - drm_dbg(&i915->drm, "Invalid placement value, %d >= %d\n",
> - idx, set->engines->num_engines);
> - return -EINVAL;
> - }
> -
> - idx = array_index_nospec(idx, set->engines->num_engines);
> - if (set->engines->engines[idx]) {
> - drm_dbg(&i915->drm,
> - "Invalid placement[%d], already occupied\n", idx);
> - return -EEXIST;
> - }
> -
> - if (get_user(num_siblings, &ext->num_siblings))
> - return -EFAULT;
> -
> - err = check_user_mbz(&ext->flags);
> - if (err)
> - return err;
> -
> - err = check_user_mbz(&ext->mbz64);
> - if (err)
> - return err;
> -
> - siblings = stack;
> - if (num_siblings > ARRAY_SIZE(stack)) {
> - siblings = kmalloc_array(num_siblings,
> - sizeof(*siblings),
> - GFP_KERNEL);
> - if (!siblings)
> - return -ENOMEM;
> - }
> -
> - for (n = 0; n < num_siblings; n++) {
> - struct i915_engine_class_instance ci;
> -
> - if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) {
> - err = -EFAULT;
> - goto out_siblings;
> - }
> -
> - siblings[n] = intel_engine_lookup_user(i915,
> - ci.engine_class,
> - ci.engine_instance);
> - if (!siblings[n]) {
> - drm_dbg(&i915->drm,
> - "Invalid sibling[%d]: { class:%d, inst:%d }\n",
> - n, ci.engine_class, ci.engine_instance);
> - err = -EINVAL;
> - goto out_siblings;
> - }
> - }
> -
> - ce = intel_execlists_create_virtual(siblings, n);
> - if (IS_ERR(ce)) {
> - err = PTR_ERR(ce);
> - goto out_siblings;
> - }
> -
> - intel_context_set_gem(ce, set->ctx, null_sseu);
> -
> - if (cmpxchg(&set->engines->engines[idx], NULL, ce)) {
> - intel_context_put(ce);
> - err = -EEXIST;
> - goto out_siblings;
> - }
> -
> -out_siblings:
> - if (siblings != stack)
> - kfree(siblings);
> -
> - return err;
> -}
> -
> -static int
> -set_engines__bond(struct i915_user_extension __user *base, void *data)
> -{
> - struct i915_context_engines_bond __user *ext =
> - container_of_user(base, typeof(*ext), base);
> - const struct set_engines *set = data;
> - struct drm_i915_private *i915 = set->ctx->i915;
> - struct i915_engine_class_instance ci;
> - struct intel_engine_cs *virtual;
> - struct intel_engine_cs *master;
> - u16 idx, num_bonds;
> - int err, n;
> -
> - if (get_user(idx, &ext->virtual_index))
> - return -EFAULT;
> -
> - if (idx >= set->engines->num_engines) {
> - drm_dbg(&i915->drm,
> - "Invalid index for virtual engine: %d >= %d\n",
> - idx, set->engines->num_engines);
> - return -EINVAL;
> - }
> -
> - idx = array_index_nospec(idx, set->engines->num_engines);
> - if (!set->engines->engines[idx]) {
> - drm_dbg(&i915->drm, "Invalid engine at %d\n", idx);
> - return -EINVAL;
> - }
> - virtual = set->engines->engines[idx]->engine;
> -
> - if (intel_engine_is_virtual(virtual)) {
> - drm_dbg(&i915->drm,
> - "Bonding with virtual engines not allowed\n");
> - return -EINVAL;
> - }
> -
> - err = check_user_mbz(&ext->flags);
> - if (err)
> - return err;
> -
> - for (n = 0; n < ARRAY_SIZE(ext->mbz64); n++) {
> - err = check_user_mbz(&ext->mbz64[n]);
> - if (err)
> - return err;
> - }
> -
> - if (copy_from_user(&ci, &ext->master, sizeof(ci)))
> - return -EFAULT;
> -
> - master = intel_engine_lookup_user(i915,
> - ci.engine_class, ci.engine_instance);
> - if (!master) {
> - drm_dbg(&i915->drm,
> - "Unrecognised master engine: { class:%u, instance:%u }\n",
> - ci.engine_class, ci.engine_instance);
> - return -EINVAL;
> - }
> -
> - if (get_user(num_bonds, &ext->num_bonds))
> - return -EFAULT;
> -
> - for (n = 0; n < num_bonds; n++) {
> - struct intel_engine_cs *bond;
> -
> - if (copy_from_user(&ci, &ext->engines[n], sizeof(ci)))
> - return -EFAULT;
> -
> - bond = intel_engine_lookup_user(i915,
> - ci.engine_class,
> - ci.engine_instance);
> - if (!bond) {
> - drm_dbg(&i915->drm,
> - "Unrecognised engine[%d] for bonding: { class:%d, instance: %d }\n",
> - n, ci.engine_class, ci.engine_instance);
> - return -EINVAL;
> - }
> - }
> -
> - return 0;
> -}
> -
> -static const i915_user_extension_fn set_engines__extensions[] = {
> - [I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE] = set_engines__load_balance,
> - [I915_CONTEXT_ENGINES_EXT_BOND] = set_engines__bond,
> -};
> -
> -static int
> -set_engines(struct i915_gem_context *ctx,
> - const struct drm_i915_gem_context_param *args)
> -{
> - struct drm_i915_private *i915 = ctx->i915;
> - struct i915_context_param_engines __user *user =
> - u64_to_user_ptr(args->value);
> - struct intel_sseu null_sseu = {};
> - struct set_engines set = { .ctx = ctx };
> - unsigned int num_engines, n;
> - u64 extensions;
> - int err;
> -
> - if (!args->size) { /* switch back to legacy user_ring_map */
> - if (!i915_gem_context_user_engines(ctx))
> - return 0;
> -
> - set.engines = default_engines(ctx, null_sseu);
> - if (IS_ERR(set.engines))
> - return PTR_ERR(set.engines);
> -
> - goto replace;
> - }
> -
> - BUILD_BUG_ON(!IS_ALIGNED(sizeof(*user), sizeof(*user->engines)));
> - if (args->size < sizeof(*user) ||
> - !IS_ALIGNED(args->size, sizeof(*user->engines))) {
> - drm_dbg(&i915->drm, "Invalid size for engine array: %d\n",
> - args->size);
> - return -EINVAL;
> - }
> -
> - num_engines = (args->size - sizeof(*user)) / sizeof(*user->engines);
> - /* RING_MASK has no shift so we can use it directly here */
> - if (num_engines > I915_EXEC_RING_MASK + 1)
> - return -EINVAL;
> -
> - set.engines = alloc_engines(num_engines);
> - if (!set.engines)
> - return -ENOMEM;
> -
> - for (n = 0; n < num_engines; n++) {
> - struct i915_engine_class_instance ci;
> - struct intel_engine_cs *engine;
> - struct intel_context *ce;
> -
> - if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) {
> - __free_engines(set.engines, n);
> - return -EFAULT;
> - }
> -
> - if (ci.engine_class == (u16)I915_ENGINE_CLASS_INVALID &&
> - ci.engine_instance == (u16)I915_ENGINE_CLASS_INVALID_NONE) {
> - set.engines->engines[n] = NULL;
> - continue;
> - }
> -
> - engine = intel_engine_lookup_user(ctx->i915,
> - ci.engine_class,
> - ci.engine_instance);
> - if (!engine) {
> - drm_dbg(&i915->drm,
> - "Invalid engine[%d]: { class:%d, instance:%d }\n",
> - n, ci.engine_class, ci.engine_instance);
> - __free_engines(set.engines, n);
> - return -ENOENT;
> - }
> -
> - ce = intel_context_create(engine);
> - if (IS_ERR(ce)) {
> - __free_engines(set.engines, n);
> - return PTR_ERR(ce);
> - }
> -
> - intel_context_set_gem(ce, ctx, null_sseu);
> -
> - set.engines->engines[n] = ce;
> - }
> - set.engines->num_engines = num_engines;
> -
> - err = -EFAULT;
> - if (!get_user(extensions, &user->extensions))
> - err = i915_user_extensions(u64_to_user_ptr(extensions),
> - set_engines__extensions,
> - ARRAY_SIZE(set_engines__extensions),
> - &set);
> - if (err) {
> - free_engines(set.engines);
> - return err;
> - }
> -
> -replace:
> - mutex_lock(&ctx->engines_mutex);
> - if (i915_gem_context_is_closed(ctx)) {
> - mutex_unlock(&ctx->engines_mutex);
> - free_engines(set.engines);
> - return -ENOENT;
> - }
> - if (args->size)
> - i915_gem_context_set_user_engines(ctx);
> - else
> - i915_gem_context_clear_user_engines(ctx);
> - set.engines = rcu_replace_pointer(ctx->engines, set.engines, 1);
> - mutex_unlock(&ctx->engines_mutex);
> -
> - /* Keep track of old engine sets for kill_context() */
> - engines_idle_release(ctx, set.engines);
> -
> - return 0;
> -}
> -
> static int
> set_persistence(struct i915_gem_context *ctx,
> const struct drm_i915_gem_context_param *args)
> @@ -2205,10 +1905,6 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv,
> ret = set_sseu(ctx, args);
> break;
>
> - case I915_CONTEXT_PARAM_ENGINES:
> - ret = set_engines(ctx, args);
> - break;
> -
> case I915_CONTEXT_PARAM_PERSISTENCE:
> ret = set_persistence(ctx, args);
> break;
> --
> 2.31.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2021-05-05 9:49 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-03 15:57 [PATCH 00/27] drm/i915/gem: ioctl clean-ups (v5) Jason Ekstrand
2021-05-03 15:57 ` [PATCH 01/27] drm/i915: Drop I915_CONTEXT_PARAM_RINGSIZE Jason Ekstrand
2021-05-03 15:57 ` [PATCH 02/27] drm/i915: Stop storing the ring size in the ring pointer Jason Ekstrand
2021-05-04 8:47 ` Daniel Vetter
2021-05-14 18:06 ` Jason Ekstrand
2021-05-03 15:57 ` [PATCH 03/27] drm/i915: Drop I915_CONTEXT_PARAM_NO_ZEROMAP Jason Ekstrand
2021-05-04 8:48 ` [Intel-gfx] " Daniel Vetter
2021-05-03 15:57 ` [PATCH 04/27] drm/i915/gem: Set the watchdog timeout directly in intel_context_set_gem (v2) Jason Ekstrand
2021-05-03 15:57 ` [PATCH 05/27] drm/i915/gem: Return void from context_apply_all Jason Ekstrand
2021-05-03 15:57 ` [PATCH 06/27] drm/i915: Drop the CONTEXT_CLONE API Jason Ekstrand
2021-05-04 8:50 ` [Intel-gfx] " Daniel Vetter
2021-05-14 18:07 ` Jason Ekstrand
2021-05-03 15:57 ` [PATCH 07/27] drm/i915: Implement SINGLE_TIMELINE with a syncobj (v4) Jason Ekstrand
2021-05-03 15:57 ` [PATCH 08/27] drm/i915: Drop getparam support for I915_CONTEXT_PARAM_ENGINES Jason Ekstrand
2021-05-03 15:57 ` [PATCH 09/27] drm/i915/gem: Disallow bonding of virtual engines (v3) Jason Ekstrand
2021-05-03 15:57 ` [PATCH 10/27] drm/i915/gem: Remove engine auto-magic with FENCE_SUBMIT Jason Ekstrand
2021-05-04 8:56 ` Daniel Vetter
2021-05-14 18:19 ` Jason Ekstrand
2021-05-03 15:57 ` [PATCH 11/27] drm/i915/request: Remove the hook from await_execution Jason Ekstrand
2021-05-04 8:55 ` Daniel Vetter
2021-05-03 15:57 ` [PATCH 12/27] drm/i915/gem: Disallow creating contexts with too many engines Jason Ekstrand
2021-05-05 9:56 ` [Intel-gfx] " Tvrtko Ursulin
2021-05-03 15:57 ` [PATCH 13/27] drm/i915: Stop manually RCU banging in reset_stats_ioctl (v2) Jason Ekstrand
2021-05-03 15:57 ` [PATCH 14/27] drm/i915/gem: Add a separate validate_priority helper Jason Ekstrand
2021-05-03 15:57 ` [PATCH 15/27] drm/i915: Add gem/i915_gem_context.h to the docs Jason Ekstrand
2021-05-04 9:11 ` Daniel Vetter
2021-05-03 15:57 ` [PATCH 16/27] drm/i915/gem: Add an intermediate proto_context struct Jason Ekstrand
2021-05-04 16:13 ` Daniel Vetter
2021-06-02 21:53 ` Jason Ekstrand
2021-06-03 7:07 ` Daniel Vetter
2021-05-05 10:09 ` [Intel-gfx] " Tvrtko Ursulin
2021-05-03 15:57 ` [PATCH 17/27] drm/i915/gem: Rework error handling in default_engines Jason Ekstrand
2021-05-04 16:17 ` [Intel-gfx] " Daniel Vetter
2021-05-14 18:21 ` Jason Ekstrand
2021-05-03 15:57 ` [PATCH 18/27] drm/i915/gem: Optionally set SSEU in intel_context_set_gem Jason Ekstrand
2021-05-04 19:00 ` [Intel-gfx] " Daniel Vetter
2021-05-05 9:28 ` Tvrtko Ursulin
2021-05-05 9:47 ` Daniel Vetter
2021-05-05 9:52 ` Tvrtko Ursulin
2021-05-03 15:57 ` [PATCH 19/27] drm/i915/gem: Use the proto-context to handle create parameters Jason Ekstrand
2021-05-04 20:33 ` Daniel Vetter
2021-05-14 19:13 ` Jason Ekstrand
2021-05-17 13:40 ` Daniel Vetter
2021-05-17 17:04 ` Jason Ekstrand
2021-05-17 18:44 ` Daniel Vetter
2021-05-18 10:51 ` Jani Nikula
2021-05-03 15:57 ` [PATCH 20/27] drm/i915/gem: Return an error ptr from context_lookup Jason Ekstrand
2021-05-03 15:57 ` [PATCH 21/27] drm/i915/gt: Drop i915_address_space::file (v2) Jason Ekstrand
2021-05-03 15:57 ` [PATCH 22/27] drm/i915/gem: Delay context creation Jason Ekstrand
2021-05-03 19:38 ` [Intel-gfx] " kernel test robot
2021-05-04 20:53 ` Daniel Vetter
2021-05-04 20:53 ` Daniel Vetter
2021-05-03 15:57 ` [PATCH 23/27] drm/i915/gem: Don't allow changing the VM on running contexts Jason Ekstrand
2021-05-03 18:52 ` [Intel-gfx] " kernel test robot
2021-05-04 21:00 ` Daniel Vetter
2021-05-04 21:17 ` Daniel Vetter
2021-05-03 15:57 ` [PATCH 24/27] drm/i915/gem: Don't allow changing the engine set " Jason Ekstrand
2021-05-05 9:49 ` Daniel Vetter [this message]
2021-05-03 15:57 ` [PATCH 25/27] drm/i915/selftests: Take a VM in kernel_context() Jason Ekstrand
2021-05-05 9:50 ` Daniel Vetter
2021-05-03 15:57 ` [PATCH 26/27] i915/gem/selftests: Assign the VM at context creation in igt_shared_ctx_exec Jason Ekstrand
2021-05-05 9:53 ` [Intel-gfx] " Daniel Vetter
2021-05-03 15:57 ` [PATCH 27/27] drm/i915/gem: Roll all of context creation together Jason Ekstrand
2021-05-05 10:05 ` [Intel-gfx] " Daniel Vetter
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