On 01/07/2021 11:14, Pekka Paalanen wrote:
On Wed, 30 Jun 2021 11:58:25 -0700
John Harrison <john.c.harrison@xxxxxxxxx> wrote:
On 6/30/2021 01:22, Martin Peres wrote:
On 24/06/2021 10:05, Matthew Brost wrote:
From: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Unblock GuC submission on Gen11+ platforms.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/uc/intel_guc.h | 1 +
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 8 ++++++++
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h | 3 +--
drivers/gpu/drm/i915/gt/uc/intel_uc.c | 14 +++++++++-----
4 files changed, 19 insertions(+), 7 deletions(-)
...
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 7a69c3c027e9..61be0aa81492 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -34,8 +34,15 @@ static void uc_expand_default_options(struct
intel_uc *uc)
return;
}
- /* Default: enable HuC authentication only */
- i915->params.enable_guc = ENABLE_GUC_LOAD_HUC;
+ /* Intermediate platforms are HuC authentication only */
+ if (IS_DG1(i915) || IS_ALDERLAKE_S(i915)) {
+ drm_dbg(&i915->drm, "Disabling GuC only due to old
platform\n");
This comment does not seem accurate, given that DG1 is barely out, and
ADL is not out yet. How about:
"Disabling GuC on untested platforms"?
Just because something is not in the shops yet does not mean it is new.
Technology is always obsolete by the time it goes on sale.
That is a very good reason to not use terminology like "new", "old",
"current", "modern" etc. at all.
End users like me definitely do not share your interpretation of "old".
Yep, old and new is relative. In the end, what matters is the validation
effort, which is why I was proposing "untested platforms".
Also, remember that you are not writing these messages for Intel
engineers, but instead are writing for Linux *users*.
Cheers,
Martin
Thanks,
pq
And the issue is not a lack of testing, it is a question of whether we
are allowed to change the default on something that has already started
being used by customers or not (including pre-release beta customers).
I.e. it is basically a political decision not an engineering decision.
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