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Date: Thu, 23 Apr 2026 06:59:18 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Thomas Sowell <tom@ldtlb.com>
Cc: stable@vger.kernel.org
Subject: Re: Please backport 3c863ff920b4 ("drm/amdgpu: replace PASID IDR
 with XArray")
Message-ID: <2026042306-grappling-scholar-c837@gregkh>
References: <gh5bqoabelvwdkmuvgb2ue7j3g2xw6i6w7upqsh3uefy7uxbym@3zuucinf7pqq>
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On Wed, Apr 22, 2026 at 07:53:22PM -0800, Thomas Sowell wrote:
> Hello,
> 
> Please consider backporting mainline commit 3c863ff920b4 ("drm/amdgpu: replace
> PASID IDR with XArray") to 6.18.y and 7.0.y. It fixes a regression introduced
> in 14b81abe7bdc ("drm/amdgpu: prevent immediate PASID reuse case").
> 
> Using the reproduction steps below I've confirmed that both 6.18 and 7.0 are
> affected by the regression and that 3c863ff920b4 resolves it in both.

Also applied to 6.12.y now too.

thanks,

greg k-h