From: Mark Brown <broonie@kernel.org>
To: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Eric Biederman <ebiederm@xmission.com>,
Kees Cook <kees@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Yury Khrustalev <yury.khrustalev@arm.com>,
Wilco Dijkstra <wilco.dijkstra@arm.com>,
linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH RFC v2 2/2] arm64: Support AT_HWCAP3
Date: Tue, 8 Oct 2024 11:04:09 +0100 [thread overview]
Message-ID: <ZwUDmYbXNMede2Ui@finisterre.sirena.org.uk> (raw)
In-Reply-To: <e563980c-9ae9-478e-89a3-819c7dadf85b@arm.com>
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On Tue, Oct 08, 2024 at 12:45:42PM +0530, Anshuman Khandual wrote:
> On 10/5/24 01:56, Mark Brown wrote:
> > +unsigned long cpu_get_elf_hwcap3(void)
> > +{
> > + return elf_hwcap[2];
> > +}
> > +
> > static void __init setup_boot_cpu_capabilities(void)
> > {
> > /*
> LGTM, but just curious do you have a upcoming feature to be added
> in AT_HWCAP3 soon ?
We've filled AT_HWCAP2 already and are starting on the free bits in
AT_HWCAP, there's only 29 of those remaining and we get things like the
dpISA releases often burning through 15 at a time. Like the cover says
it's not a pressing issue at this minute but whenever it does become a
pressing issue there's likely to be multiple extensions in flight and
it'll help not to have them all trying to carry the same serieses.
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next prev parent reply other threads:[~2024-10-08 10:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-04 20:26 [PATCH RFC v2 0/2] arm64: Add infrastructure for use of AT_HWCAP3 Mark Brown
2024-10-04 20:26 ` [PATCH RFC v2 1/2] binfmt_elf: Wire up AT_HWCAP3 at AT_HWCAP4 Mark Brown
2024-10-05 0:22 ` Kees Cook
2024-10-08 7:03 ` Anshuman Khandual
2024-10-04 20:26 ` [PATCH RFC v2 2/2] arm64: Support AT_HWCAP3 Mark Brown
2024-10-08 7:15 ` Anshuman Khandual
2024-10-08 10:04 ` Mark Brown [this message]
2024-10-17 17:58 ` [PATCH RFC v2 0/2] arm64: Add infrastructure for use of AT_HWCAP3 Catalin Marinas
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