* memmap exclude boot command: how to check if it was indeed applied
@ 2013-07-01 18:40 Eric Valette
2013-07-02 6:05 ` Eric Valette
0 siblings, 1 reply; 2+ messages in thread
From: Eric Valette @ 2013-07-01 18:40 UTC (permalink / raw)
To: linux-kernel
Hi,
After hunting an unreproducible bug, I decided to run memtest86+ and
found that only 8 byte of memory refuse to write the last two digit on
the last 4GB memory stick.
Memory is at 0x31db357558
So I decided to add a memmap=4K@0x000000031db35000 boot options in
GRUB_CMDLINE_LINUX. But checking dmesg, I see no mention of this page
being reserved.
PS: CC me I'm not subscribed.
-- eric
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: memmap exclude boot command: how to check if it was indeed applied
2013-07-01 18:40 memmap exclude boot command: how to check if it was indeed applied Eric Valette
@ 2013-07-02 6:05 ` Eric Valette
0 siblings, 0 replies; 2+ messages in thread
From: Eric Valette @ 2013-07-02 6:05 UTC (permalink / raw)
To: linux-kernel; +Cc: eric.valette
On 01/07/2013 20:40, Eric Valette wrote:
> Hi,
>
> After hunting an unreproducible bug, I decided to run memtest86+ and
> found that only 8 byte of memory refuse to write the last two digit on
> the last 4GB memory stick.
>
> Memory is at 0x31db357558
>
> So I decided to add a memmap=4K@0x000000031db35000 boot options in
> GRUB_CMDLINE_LINUX. But checking dmesg, I see no mention of this page
> being reserved.
>
> PS: CC me I'm not subscribed.
Analysing /sys/firmware/memmap files, I see no trace of buggy address
exclusion. Any help?
--eric
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-07-01 18:40 memmap exclude boot command: how to check if it was indeed applied Eric Valette
2013-07-02 6:05 ` Eric Valette
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