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From: Rodrigo Vivi <rodrigo.vivi@intel.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org
Subject: Re: [Intel-gfx] 5.14-rc2 warnings with kvmgvt
Date: Wed, 21 Jul 2021 17:18:18 -0400	[thread overview]
Message-ID: <YPiPGv/wtnjsxSZy@intel.com> (raw)
In-Reply-To: <YPiGI9tzLzGZg47j@infradead.org>

On Wed, Jul 21, 2021 at 09:40:03PM +0100, Christoph Hellwig wrote:
> On Wed, Jul 21, 2021 at 04:43:44PM +0100, Christoph Hellwig wrote:
> > > > I'm trying to test some changes for the gvt code, but even with a baseline
> > > > 5.14-rc2 host and guest the 915 driver does not seem overly happy:
> > > 
> > > Is this a regression over -rc1 or over 5.13?
> > > Bisect possible?
> > 
> > This was introduced somewhere between 5.12 and 5.13, still bisecting.
> > Note that it only happens for "headless" setups.  Once a display is
> > added on the qemu command line it goes away.
> 
> The culprit is:
> 
> commit f4eb6d4906669b4285c4f49c87814d4ce63c35bb
> Author: Jani Nikula <jani.nikula@intel.com>
> Date:   Wed Mar 17 18:36:45 2021 +0200
> 
>     drm/i915/bios: limit default outputs to ports A through F
>         

could you please try this small patch?

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 5b6922e28ef2..8bbeb5978bf7 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2166,7 +2166,8 @@ static void
 init_vbt_missing_defaults(struct drm_i915_private *i915)
 {
        enum port port;
-       int ports = PORT_A | PORT_B | PORT_C | PORT_D | PORT_E | PORT_F;
+       int ports = BIT(PORT_A) | BIT(PORT_B) | BIT(PORT_C) | \
+                   BIT(PORT_D) | BIT(PORT_E) | BIT(PORT_F);
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  reply	other threads:[~2021-07-21 21:18 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-21 11:10 [Intel-gfx] 5.14-rc2 warnings with kvmgvt Christoph Hellwig
2021-07-21 11:24 ` Rodrigo Vivi
2021-07-21 15:43   ` Christoph Hellwig
2021-07-21 20:40     ` Christoph Hellwig
2021-07-21 21:18       ` Rodrigo Vivi [this message]
2021-07-22  4:24         ` Christoph Hellwig
2021-07-22  5:55           ` Lucas De Marchi
2021-07-22  7:20             ` Christoph Hellwig
2021-07-22 16:03               ` Lucas De Marchi
2021-07-22 16:08                 ` Christoph Hellwig
2021-07-21 21:47 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for " Patchwork
2021-07-22  5:05 ` [Intel-gfx] " Zhenyu Wang
2021-07-22  5:52   ` Christoph Hellwig
2021-07-22  6:34 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for 5.14-rc2 warnings with kvmgvt (rev2) Patchwork

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