linux-kernel - Re: [PATCH v4 3/3] acpi, apei, ghes: Factor out ioremap virtual memory for IRQ and NMI context.

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]

Date:	Wed, 2 Jul 2014 14:17:00 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Tomasz Nowicki <tomasz.nowicki@...aro.org>
Cc:	rjw@...ysocki.net, lenb@...nel.org, tony.luck@...el.com,
	m.chehab@...sung.com, bp@...e.de, linux-edac@...r.kernel.org,
	x86@...nel.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linaro-acpi@...ts.linaro.org,
	rric@...nel.org
Subject: Re: [PATCH v4 3/3] acpi, apei, ghes: Factor out ioremap virtual
 memory for IRQ and NMI context.

On Tue, Jun 24, 2014 at 01:41:35PM +0200, Tomasz Nowicki wrote:
> GHES currently maps two pages with atomic_ioremap.  From now
> on, NMI is architectural depended so there is no need to allocate
> an NMI page for platforms without NMI support.
> 
> To make it possible to not use a second page, swap the existing
> page order so that the IRQ context page is first, and the optional
> NMI context page is second.  Then, use HAVE_ACPI_APEI_NMI to decide
> how many pages are to be allocated.
> 
> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@...aro.org>

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/