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X-CSE-ConnectionGUID: 9xcdMfUMTcKE+v5WPS2G5w== X-CSE-MsgGUID: UUL7JslWRUK8wPO2Fqvf8Q== X-IronPort-AV: E=McAfee;i="6800,10657,11698"; a="72238077" X-IronPort-AV: E=Sophos;i="6.21,286,1763452800"; d="scan'208";a="72238077" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Feb 2026 00:52:47 -0800 X-CSE-ConnectionGUID: Or/IkaulSwe++x5wKKy2iA== X-CSE-MsgGUID: wrtzGgAjRh2Jtc4ZZI7BmA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,286,1763452800"; d="scan'208";a="211370272" Received: from pgcooper-mobl3.ger.corp.intel.com (HELO [10.245.245.128]) ([10.245.245.128]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Feb 2026 00:52:45 -0800 Message-ID: Subject: Re: [PATCH v4] mm: Fix a hmm_range_fault() livelock / starvation problem From: Thomas =?ISO-8859-1?Q?Hellstr=F6m?= To: Andrew Morton Cc: intel-xe@lists.freedesktop.org, Alistair Popple , Ralph Campbell , Christoph Hellwig , Jason Gunthorpe , Jason Gunthorpe , Leon Romanovsky , Matthew Brost , John Hubbard , linux-mm@kvack.org, dri-devel@lists.freedesktop.org, stable@vger.kernel.org Date: Thu, 12 Feb 2026 09:52:43 +0100 In-Reply-To: <20260209173446.b76547c4028132f71de1b8eb@linux-foundation.org> References: <20260205111028.200506-1-thomas.hellstrom@linux.intel.com> <89cb1d4744789702cd80dba8eb40dd50bf053b4e.camel@linux.intel.com> <20260209173446.b76547c4028132f71de1b8eb@linux-foundation.org> Organization: Intel Sweden AB, Registration Number: 556189-6027 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.2 (3.58.2-1.fc43) MIME-Version: 1.0 X-Rspamd-Queue-Id: 8181514000D X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: kw33tzzmz5ungbbf155jyrk195cuzw1p X-HE-Tag: 1770886369-111963 X-HE-Meta: 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 DJGk9cae UtFxltXxXbg5iHA+aJFLGYuWP6JmHv+RU/P+jwZDXDnivo2CktpD+5uFcWgS8z7kvZyRzdEMq7tMLF4lbusz412Mzi7KRt5bwVGlY6+qo6tSAvhLsxr0EuS85TppL1Q5LG/oaOuGw65CCb9EiL+BzclmClnINPMTJVEz3pUUHoX2KoeEr/XUqMajD4RGfYbbhJpJWKkRfCUoQPMIx++rXXRpNX+RV/hDZz1nWvHdXIK2CorXLXPbBhvaIUvqoWVpGMu3ix3QCg8Xwhz1jDK1aAaCdEwfbvEE7CnsuFWu02TrwEYrpkIv5Jz9SXYjW5uAPWzRu/PRIAn6pczYeIsB+29u+8Y66fKw5WuDAdI+fyeyH8op6hY4gp+XAMTJsfypz/SB5 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 2026-02-09 at 17:34 -0800, Andrew Morton wrote: > On Mon, 09 Feb 2026 15:47:38 +0100 Thomas Hellstr=C3=B6m > wrote: >=20 > > @Alistair, any chance of an R-B for the below version? >=20 > Yes please. >=20 > > @Andrew, will this go through the -mm tree or alternaltively an ack > > for > > merging through drm-xe-fixes? >=20 > Either works.=C2=A0 I'll grab a copy.=C2=A0 It you want to take this via = drm > then > I'll drop the mm.git copy once the drm tree's version appears in > linux-next. >=20 > Acked-by: Andrew Morton >=20 > >=20 The drm tree's version now appears in linux-next as a69d1ab971a624c6f112cea61536569d579c3215 Thanks, Thomas