All of lore.kernel.org
 help / color / mirror / Atom feed
From: Julien Grall <julien@xen.org>
To: Henry Wang <Henry.Wang@arm.com>,
	"sstabellini@kernel.org" <sstabellini@kernel.org>,
	"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Cc: Wei Chen <Wei.Chen@arm.com>, Penny Zheng <Penny.Zheng@arm.com>,
	Bertrand Marquis <Bertrand.Marquis@arm.com>
Subject: Re: Discussion of Xenheap problems on AArch64
Date: Mon, 10 May 2021 17:58:34 +0100	[thread overview]
Message-ID: <ba649865-410b-e1be-39a3-c4cac802f464@xen.org> (raw)
In-Reply-To: <PA4PR08MB62537A958107CD234831E0B892579@PA4PR08MB6253.eurprd08.prod.outlook.com>

Hi Henry,

On 07/05/2021 05:06, Henry Wang wrote:
>> From: Julien Grall <julien@xen.org>
>> On 28/04/2021 10:28, Henry Wang wrote:
>>> Hi Julien,
>>
>> Hi Henry,
>>
>>>
>>> I've done some test about the patch series in
>>> https://xenbits.xen.org/gitweb/?p=people/julieng/xen-
>> unstable.git;a=shortlog;h=refs/heads/pt/rfc-v2
>>>
>>
>> Thanks you for the testing. Some questions below.
>>
>> I am a bit confused with the output with and without my patches. Both of
>> them are showing a data abort in clear_page().
>>
>> Above, you suggested that there is a big gap between the two memory
>> banks. Are the banks still point to actual RAM?
> 
> Another sorry for the very late reply, we had a 5 day public holiday in
> China and it also took me some time to figure out how to configure the
> FVP (it turned out I have to set -C bp.secure_memory=false to access
> some parts of memory higher than 4G).

No worries. I never tried to tweak the memory layout on the FVP before. 
It is good to know it can be done to properly test memory issue :).

[...]

> when I continue booting Xen, I got following error log:
> 
> (XEN) CPU:    0
> (XEN) PC:     00000000002b5a5c alloc_boot_pages+0x94/0x98
> (XEN) LR:     00000000002ca3bc
> (XEN) SP:     00000000002ffde0
> (XEN) CPSR:   600003c9 MODE:64-bit EL2h (Hypervisor, handler)
> (XEN)
> (XEN)   VTCR_EL2: 80000000
> (XEN)  VTTBR_EL2: 0000000000000000
> (XEN)
> (XEN)  SCTLR_EL2: 30cd183d
> (XEN)    HCR_EL2: 0000000000000038
> (XEN)  TTBR0_EL2: 000000008413c000
> (XEN)
> (XEN)    ESR_EL2: f2000001
> (XEN)  HPFAR_EL2: 0000000000000000
> (XEN)    FAR_EL2: 0000000000000000
> (XEN)
> (XEN) Xen call trace:
> (XEN)    [<00000000002b5a5c>] alloc_boot_pages+0x94/0x98 (PC)
> (XEN)    [<00000000002ca3bc>] setup_frametable_mappings+0xa4/0x108 (LR)
> (XEN)    [<00000000002ca3bc>] setup_frametable_mappings+0xa4/0x108
> (XEN)    [<00000000002cb988>] start_xen+0x344/0xbcc
> (XEN)    [<00000000002001c0>] arm64/head.o#primary_switched+0x10/0x30
> (XEN)
> (XEN) ****************************************
> (XEN) Panic on CPU 0:
> (XEN) Xen BUG at page_alloc.c:432
> (XEN) ****************************************

This is happening without my patch series applied, right? If so, what 
happen if you apply it?

Cheers,

-- 
Julien Grall


  reply	other threads:[~2021-05-10 16:58 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-21  6:28 Discussion of Xenheap problems on AArch64 Henry Wang
2021-04-21  9:03 ` Julien Grall
2021-04-21  9:32   ` Henry Wang
2021-04-25 20:19     ` Julien Grall
2021-04-27  6:29       ` Henry Wang
2021-04-28  9:28         ` Henry Wang
2021-04-28 12:46           ` Julien Grall
2021-05-07  4:06             ` Henry Wang
2021-05-10 16:58               ` Julien Grall [this message]
2021-05-11  1:11                 ` Henry Wang
2021-05-13 18:18                   ` Julien Grall
2021-05-14  4:35                     ` Henry Wang
2021-05-15 19:11                       ` Julien Grall
2021-05-17  6:38                         ` Henry Wang
2021-05-18 14:09                           ` Julien Grall

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=ba649865-410b-e1be-39a3-c4cac802f464@xen.org \
    --to=julien@xen.org \
    --cc=Bertrand.Marquis@arm.com \
    --cc=Henry.Wang@arm.com \
    --cc=Penny.Zheng@arm.com \
    --cc=Wei.Chen@arm.com \
    --cc=sstabellini@kernel.org \
    --cc=xen-devel@lists.xenproject.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.