From: "Lendacky, Thomas" <Thomas.Lendacky@amd.com>
To: Borislav Petkov <bp@alien8.de>, Baoquan He <bhe@redhat.com>
Cc: "x86@kernel.org" <x86@kernel.org>, lijiang <lijiang@redhat.com>,
"peterz@infradead.org" <peterz@infradead.org>,
"dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
"kexec@lists.infradead.org" <kexec@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"mingo@redhat.com" <mingo@redhat.com>,
"luto@kernel.org" <luto@kernel.org>,
"hpa@zytor.com" <hpa@zytor.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"dyoung@redhat.com" <dyoung@redhat.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>
Subject: Re: [PATCH 0/3 v11] add reserved e820 ranges to the kdump kernel e820 table
Date: Wed, 12 Jun 2019 16:52:22 +0000 [thread overview]
Message-ID: <3dfa5985-008a-20d8-5171-cfe96807c303@amd.com> (raw)
In-Reply-To: <20190612151033.GJ32652@zn.tnic>
On 6/12/19 10:10 AM, Borislav Petkov wrote:
> On Wed, Jun 12, 2019 at 09:55:49AM +0800, Baoquan He wrote:
>> With further investigation, the failure after applying Tom's patch is
>> caused by OOM. When increase crashkernel reservation to 512M, kdump
>> kernel can boot successfully. I noticed your crashkernel reservation is
>> 256M, that will fail and stuck there very possibly.
>>
>> So Tom's patch can fix the issue. We need further check why much more
>> crashkernel memory is needed on those AMD boxes with sme support..
>
> Yes, 256M for a kexec kernel sounds pretty much enough to me. So there's
> something else at play here. I wonder if that workarea after _end, from
> Tom's patch, needs so much room...
I think the discussion ended up being that debuginfo wasn't being stripped
from the kernel and initrd (mainly the initrd). What are the sizes of
the kernel and initrd that you are loading for kdump via kexec?
From previous post:
kexec -s -p /boot/vmlinuz-5.2.0-rc3+ --initrd=/boot/initrd.img-5.2.0-rc3+
Thanks,
Tom
>
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next prev parent reply other threads:[~2019-06-12 16:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-23 1:30 [PATCH 0/3 v11] add reserved e820 ranges to the kdump kernel e820 table Lianbo Jiang
2019-04-23 1:30 ` [PATCH 1/3 v11] x86/e820, resource: add a new I/O resource descriptor 'IORES_DESC_RESERVED' Lianbo Jiang
2019-04-23 1:30 ` [PATCH 2/3 v11] x86/mm: change the check condition in SEV because a new descriptor is introduced Lianbo Jiang
2019-04-23 1:30 ` [PATCH 3/3 v11] x86/kexec_file: add reserved e820 ranges to kdump kernel e820 table Lianbo Jiang
2019-05-28 7:30 ` [PATCH 0/3 v11] add reserved e820 ranges to the " lijiang
2019-06-07 17:42 ` Borislav Petkov
2019-06-08 3:54 ` Baoquan He
2019-06-08 9:10 ` Borislav Petkov
2019-06-08 10:01 ` Baoquan He
2019-06-08 10:06 ` Borislav Petkov
2019-06-08 10:26 ` Baoquan He
2019-06-10 11:37 ` Borislav Petkov
2019-06-12 1:14 ` lijiang
2019-06-12 1:55 ` Baoquan He
2019-06-12 5:49 ` Dave Young
2019-06-12 15:10 ` Borislav Petkov
2019-06-12 16:52 ` Lendacky, Thomas [this message]
2019-06-12 18:07 ` Borislav Petkov
2019-06-12 19:10 ` Lendacky, Thomas
2019-06-13 15:07 ` Baoquan He
2019-06-13 1:18 ` dyoung
2019-06-09 4:02 ` lijiang
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