linux-kernel - Re: [PATCH v3 08/10] x86/head64.c: Early update ucode in 64-bit

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Date:	Sun, 16 Dec 2012 16:42:25 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"Yu, Fenghua" <fenghua.yu@...el.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Mallick, Asit K" <asit.k.mallick@...el.com>,
	Tigran Aivazian <tigran@...azian.fsnet.co.uk>,
	Andreas Herrmann <andreas.herrmann3@....com>,
	Borislav Petkov <borislav.petkov@....com>,
	linux-kernel <linux-kernel@...r.kernel.org>, x86 <x86@...nel.org>
Subject: Re: [PATCH v3 08/10] x86/head64.c: Early update ucode in 64-bit

On Sun, Dec 16, 2012 at 3:59 PM, Yu, Fenghua <fenghua.yu@...el.com> wrote:
>
>> it has to be rebased after #PF handler version. otherwise it can not
>> handle for framdisk
>> that is loaded after 1G.
>>
>> Fenghua,
>>
>> can you post your boot log with 64bit with your patch?
>>
>> Yinghai
>
> Attached is dmesg with the patches.
>

yes, your laptop only have 1G ram, and

[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009d7ff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009d800-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000d2000-0x00000000000d3fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000003e6affff] usable
[    0.000000] BIOS-e820: [mem 0x000000003e6b0000-0x000000003e6ccfff] ACPI data
[    0.000000] BIOS-e820: [mem 0x000000003e6cd000-0x000000003e6fffff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x000000003e700000-0x000000003effffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000f0000000-0x00000000f3ffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000fec0ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed00000-0x00000000fed003ff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed14000-0x00000000fed19fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed8ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved

ramdisk is at
     RAMDISK: [mem 0x27608000-0x2fafbfff]

and current kernel default set 1G to kernel mapping. so it happens to
work with your patchset.

please find one sytem with 4G or more to test it.

and you may need to rebase your patches on top of my for-x86-boot
branch with working
#PF handler set page table patch.

git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
for-x86-boot

Thanks

Yinghai
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