linux-kernel - Re: [PATCH 31/31] memblock: Add memblock_find_in

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, 28 Jul 2010 12:58:44 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	James Bottomley <James.Bottomley@...senPartnership.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	Andrew Vasquez <andrew.vasquez@...gic.com>
Subject: Re: [PATCH 31/31] memblock: Add memblock_find_in_range()

On 07/28/2010 12:27 PM, Yinghai Lu wrote:
>>
>> Yinghai, do you have any more detail, or know who would?  Also copying
>> the Qlogic Infinipath maintainer email...
> 
> when I was debug memblock with x86, found the strange crash when high/low.
> then use kexec with "memtest" in command line, and the early memtest does find
> some bad memory. 
> 
> then I add more print about EPT physical address for first kernel,
> it does show that range is used by qla driver in first kernel.
> I built all needed drivers in kernel so can pxeboot the kernel on all test platforms easily.
> 

[Cc: Andrew Vasquez, who seems to have written the offending code,
checkin df613b96077cee826b14089ae6e75eeabf71faa3.]

The question is still open why this particular DMA activity was not shut
down before the kexec.  I'm not familiar with how non-crashdump kexec
idles the hardware, but it obviously better do so.

	-hpa
--
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/