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From: Borislav Petkov <bp@alien8.de>
To: Joerg Roedel <joro@8bytes.org>
Cc: Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Joerg Roedel <jroedel@suse.de>
Subject: Re: [PATCH 3/3] x86, crash: Allocate enough low-mem when crashkernel=high
Date: Mon, 26 Jan 2015 13:20:17 +0100 [thread overview]
Message-ID: <20150126122017.GA1656@pd.tnic> (raw)
In-Reply-To: <20150126121142.GG30345@8bytes.org>
On Mon, Jan 26, 2015 at 01:11:42PM +0100, Joerg Roedel wrote:
> Well, there is no easy way. But we could collect information from the
> loaded drivers on boot about how many dma-memory they allocate and base
> our allocation on that.
That sounds like a nifty idea to me.
> Or we solve it in user-space by some more cleverness in creating the
> kernel command-line for crashkernel=high.
I'd say, we should try to do as much as possible automatically.
> But besides that, I think the first two patches of this set make sense
> anyway. I understand that the third one is debatable.
Right, but since they fix a real problem, maybe we should take them now
until a better fix is done? Yes, no?
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2015-01-26 12:20 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-06 14:51 [PATCH 0/3 v2] Fix kdump failures with crashkernel=high Joerg Roedel
2015-01-06 14:51 ` [PATCH 1/3] swiotlb: Warn on allocation failure in swiotlb_alloc_coherent Joerg Roedel
2015-01-23 17:04 ` Borislav Petkov
2015-01-26 11:49 ` Joerg Roedel
2015-01-06 14:51 ` [PATCH 2/3] x86, swiotlb: Try coherent allocations with __GFP_NOWARN Joerg Roedel
2015-01-23 17:03 ` Borislav Petkov
2015-01-26 3:22 ` Baoquan He
2015-01-26 11:54 ` Joerg Roedel
2015-01-06 14:51 ` [PATCH 3/3] x86, crash: Allocate enough low-mem when crashkernel=high Joerg Roedel
2015-01-23 8:44 ` Baoquan He
2015-01-26 12:07 ` Joerg Roedel
2015-02-01 8:41 ` Baoquan He
2015-02-04 14:10 ` Joerg Roedel
2015-02-09 12:20 ` Joerg Roedel
2015-02-13 15:34 ` Baoquan He
2015-02-13 22:28 ` Joerg Roedel
2015-02-14 11:44 ` Baoquan He
2015-01-23 17:02 ` Borislav Petkov
2015-01-26 12:11 ` Joerg Roedel
2015-01-26 12:20 ` Borislav Petkov [this message]
2015-01-26 12:40 ` Joerg Roedel
2015-01-26 12:45 ` Borislav Petkov
2015-01-14 13:35 ` [PATCH 0/3 v2] Fix kdump failures with crashkernel=high Joerg Roedel
2015-01-19 19:26 ` Borislav Petkov
2015-02-14 10:58 ` Baoquan He
2015-02-14 16:11 ` Joerg Roedel
2015-06-02 8:54 ` Baoquan He
2015-06-02 9:08 ` Joerg Roedel
-- strict thread matches above, loose matches on Subject: below --
2015-06-05 10:29 [PATCH 0/3 v3] " Joerg Roedel
2015-06-05 10:30 ` [PATCH 3/3] x86, crash: Allocate enough low-mem when crashkernel=high Joerg Roedel
2014-11-28 11:29 [PATCH 0/3] Fix kdump failures with crashkernel=high Joerg Roedel
2014-11-28 11:29 ` [PATCH 3/3] x86, crash: Allocate enough low-mem when crashkernel=high Joerg Roedel
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