From nobody Wed Apr 1 09:43:50 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 44C12377543; Mon, 30 Mar 2026 16:02:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774886528; cv=none; b=u9gcdRH65ykopGJvSb+lvYAbKy7EdzuaI6vO1MbMStJdEEAzBzI5lcqkMO44H7uWPBV2vLfNrIk2NTrBROpshdQbi3S9tDm1/t227ATEcMigX9JBlRlvI7kK4GwJ2OoXfX1VpB+FDpIJEfWzI+IlqYXFEwfSj5zwOhtM5t81AIo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774886528; c=relaxed/simple; bh=AZ0uldLaPK5hj2AgqSOwxEW6YqwCYBF18h01AvCu1nM=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=p/EW0unXEguph+i84CeZTmaa9T0qpA+SKesozek4vpbXw1XEn9/klxfH9xsszX2N9kiGMjlz6YYjQdl0i6fB5iC/XSjeSJM5zMxV+rifi2UXjo+WUcu2txCsweO9gMXajgH0M3H5wLWEtlahySybJbrNv9sqy3y99y+WtmCdNFg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lRBCsvkU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lRBCsvkU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9E25EC2BCB2; Mon, 30 Mar 2026 16:02:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774886528; bh=AZ0uldLaPK5hj2AgqSOwxEW6YqwCYBF18h01AvCu1nM=; h=Date:From:To:Cc:Subject:From; b=lRBCsvkUDgYCeFXwKP0ieKfVCrnq23WG2/iGygDx03+c4ybXzxe0a/zcmqU7lLnq/ 1G7dNSwqbrt0AE2gjT07Q+O3uHbJ5JiA6ql5GOIR+b7l9NhZNeX7lhk5G0sTSoY1b+ 0Q4aqz9wsT0JtKROcMN9P3lmoV0j7/4mNcTxFre6TsbS4Qv9w+RHAKWJu53nrtbeUv vt4VkmuyJQp6/RAEus2hIG/iEHc7/7sSB2taUf3bBwAmj1fWi23khbcD7vXDieuNo1 9A1QXY1MulFAcg+G2rMIRCXJHwU3SDTS6jAtSaKr/p7hQBMW9igm1sHullKAfNG2yZ /Fv9r5EGaPsuQ== Date: Mon, 30 Mar 2026 17:02:03 +0100 From: Mark Brown To: Simona Vetter , Intel Graphics , DRI Cc: Dave Airlie , Linux Kernel Mailing List , Linux Next Mailing List , Maxime Ripard Subject: linux-next: manual merge of the drm-misc tree with the drm tree Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="q9oCtFYbqaFS5j8v" Content-Disposition: inline --q9oCtFYbqaFS5j8v Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Hi all, Today's linux-next merge of the drm-misc tree got a conflict in: drivers/gpu/drm/drm_gem_shmem_helper.c between commits: d9a4a2021d4a5 ("Merge tag 'drm-misc-next-2026-03-12' of https://gitlab.fr= eedesktop.org/drm/misc/kernel into drm-next") from the drm tree and commit: 6fdfd24017756 ("Merge drm/drm-fixes into drm-misc-next-fixes") from the drm-misc tree. I fixed it up (see below) and can carry the fix as necessary. This is now fixed as far as linux-next is concerned, but any non trivial conflicts should be mentioned to your upstream maintainer when your tree is submitted for merging. You may also want to consider cooperating with the maintainer of the conflicting tree to minimise any particularly complex conflicts. diff --combined drivers/gpu/drm/drm_gem_shmem_helper.c index 044f0d4ebf555,2062ca6078330..0000000000000 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@@ -554,20 -554,24 +554,20 @@@ int drm_gem_shmem_dumb_create(struct dr } EXPORT_SYMBOL_GPL(drm_gem_shmem_dumb_create); =20 -static vm_fault_t try_insert_pfn(struct vm_fault *vmf, unsigned int order, - unsigned long pfn) +static vm_fault_t drm_gem_shmem_try_insert_pfn_pmd(struct vm_fault *vmf, = unsigned long pfn) { - if (!order) { - return vmf_insert_pfn(vmf->vma, vmf->address, pfn); #ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP - } else if (order =3D=3D PMD_ORDER) { - unsigned long paddr =3D pfn << PAGE_SHIFT; - bool aligned =3D (vmf->address & ~PMD_MASK) =3D=3D (paddr & ~PMD_MASK); + unsigned long paddr =3D pfn << PAGE_SHIFT; + bool aligned =3D (vmf->address & ~PMD_MASK) =3D=3D (paddr & ~PMD_MASK); =20 - if (aligned && - folio_test_pmd_mappable(page_folio(pfn_to_page(pfn)))) { - pfn &=3D PMD_MASK >> PAGE_SHIFT; - return vmf_insert_pfn_pmd(vmf, pfn, false); - } -#endif + if (aligned && pmd_none(*vmf->pmd)) { + /* Read-only mapping; split upon write fault */ + pfn &=3D PMD_MASK >> PAGE_SHIFT; + return vmf_insert_pfn_pmd(vmf, pfn, false); } - return VM_FAULT_FALLBACK; +#endif + + return 0; } =20 static vm_fault_t drm_gem_shmem_any_fault(struct vm_fault *vmf, unsigned = int order) @@@ -584,6 -588,9 +584,9 @@@ struct folio *folio; unsigned long pfn; =20 + if (order && order !=3D PMD_ORDER) + return VM_FAULT_FALLBACK; +=20 dma_resv_lock(obj->resv, NULL); =20 if (page_offset >=3D num_pages || drm_WARN_ON_ONCE(dev, !shmem->pages) || @@@ -597,11 -604,7 +600,11 @@@ =20 pfn =3D page_to_pfn(page); =20 - ret =3D try_insert_pfn(vmf, order, pfn); + if (folio_test_pmd_mappable(folio)) + ret =3D drm_gem_shmem_try_insert_pfn_pmd(vmf, pfn); + if (ret !=3D VM_FAULT_NOPAGE) + ret =3D vmf_insert_pfn(vma, vmf->address, pfn); + if (ret =3D=3D VM_FAULT_NOPAGE) folio_mark_accessed(folio); =20 --q9oCtFYbqaFS5j8v Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmnKnnsACgkQJNaLcl1U h9ATtwf/XVwOAJ9jZAbFoRGmM+aLhW814fUUnre9YJFIUtrihvOzF+CSmQt6iiBY UPuEhCRtw6qkP5+Dnf/nmlCx1F+99sN8QqV8GdgSPxeMp8krpMjHgpi3kkPbCSwq tC7JwzlrzeyC6vVmBCQMlx9duUGt1BHb4QtF0iX2viJm4mhc0iEwFDqdfYWZNA5O YGzTCoO1JdoCv9GN3PlsonncRHFnOwJzq47dVTMIl96bU0dAH0WU34kkVfH5QY1L f3Ipkqtyxw4J2ueI+dPAuJsjn7gjyGLMMjC72vQKp9tHZfN/lNAlU1HJR4uKo3/9 ejY2wKNjnz963sg/5NdmhKqGZBtbZw== =+Hwg -----END PGP SIGNATURE----- --q9oCtFYbqaFS5j8v--