linux-kernel - Re: [PATCH RFC v3 13/21] ACPICA: Add new MADT GICC flags fields

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZXyEiHLFBsoUkfNI@shell.armlinux.org.uk>
Date: Fri, 15 Dec 2023 16:53:28 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc: linux-pm@...r.kernel.org, loongarch@...ts.linux.dev,
	linux-acpi@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-riscv@...ts.infradead.org, kvmarm@...ts.linux.dev,
	x86@...nel.org, acpica-devel@...ts.linuxfoundation.org,
	linux-csky@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-ia64@...r.kernel.org, linux-parisc@...r.kernel.org,
	Salil Mehta <salil.mehta@...wei.com>,
	Jean-Philippe Brucker <jean-philippe@...aro.org>,
	jianyong.wu@....com, justin.he@....com,
	James Morse <james.morse@....com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>
Subject: Re: [PATCH RFC v3 13/21] ACPICA: Add new MADT GICC flags fields

On Fri, Dec 15, 2023 at 04:23:22PM +0000, Jonathan Cameron wrote:
> On Wed, 13 Dec 2023 12:50:18 +0000
> Russell King (Oracle) <rmk+kernel@...linux.org.uk> wrote:
> 
> > From: James Morse <james.morse@....com>
> > 
> > Add the new flag field to the MADT's GICC structure.
> > 
> > 'Online Capable' indicates a disabled CPU can be enabled later. See
> > ACPI specification 6.5 Tabel 5.37: GICC CPU Interface Flags.
> > 
> > Signed-off-by: James Morse <james.morse@....com>
> > Tested-by: Miguel Luis <miguel.luis@...cle.com>
> > Tested-by: Vishnu Pajjuri <vishnu@...amperecomputing.com>
> > Tested-by: Jianyong Wu <jianyong.wu@....com>
> > Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> 
> I see there is an acpica pull request including this bit but with a different name
> For reference.
> https://github.com/acpica/acpica/pull/914/commits/453a5f67567786522021d5f6913f561f8b3cabf6
> 
> +CC Lorenzo who submitted that.

> > +#define ACPI_MADT_GICC_CPU_CAPABLE      (1<<3)	/* 03: CPU is online capable */
> 
> ACPI_MADT_GICC_ONLINE_CAPABLE

It's somewhat disappointing, but no big deal. It's easy enough to change
"irqchip/gic-v3: Add support for ACPI's disabled but 'online capable' CPUs"
to use Lorenzo's name when that patch hits - and it becomes one less
patch in this patch set when Lorenzo's change eventually hits mainline.

Does anyone know how long it may take for Lorenzo's change to get into
mainline? Would it be by the 6.8 merge window or the following one?

Thanks.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!