Re: [Xen-devel] OVMF related osstest failures on multiple branches

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Wed, 2016-01-06 at 12:35 +0000, Ian Campbell wrote:
> The fly in the ointment of this theory is that the Jessie upgrade doesn't
> seem to have broken unstable in this way, for some reason, which is what I
> intend to investigate first.

One difference between all the failing versions and xen-unstable is that
unstable has a newer OVMFÂ52a99493cce8 (works) vsÂcb9a7ebabcd6 (fails).

It's possible there is a fix in there which would explain this, but its a
lot of commits to trawl through.

That said, one did stand out (below). A hang would correlate with a
complete lack of output (serial, vga) in the failure case (e.g. the 4.6-
testing one at [0]). Jessie is GCC49.

Next step is I'm trying 4.6-testing with the newer OVMF to see if this is
worth pursuing.

Ian.

[0]Â
http://logs.test-lab.xenproject.org/osstest/logs/76950/test-amd64-amd64-xl-qemuu-ovmf-amd64/info.html)

Ian.


commit 55e96f9c601781b8dc52c40747922f6ca3521f9e
Author: Ruiyu Ni <ruiyu.ni@xxxxxxxxx>
Date:ÂÂÂThu Jul 9 08:55:23 2015 +0000

ÂÂÂÂOvmfPkg: Fix GCC49 build hang in PeiCore
ÂÂÂÂ
ÂÂÂÂPeiCore hang when loads a PEIM whose section alignment requirement is 0x40
ÂÂÂÂbut the actual base address is 0x20 aligned.
ÂÂÂÂ
ÂÂÂÂThe issue is caused by the following facts, in order:
ÂÂÂÂ
ÂÂÂÂ1. GCC49 requires the section alignment of .data to be 0x40. So a new link
ÂÂÂÂÂÂÂscript gcc4.9-ld-script was added for GCC49 to specify the 0x40
ÂÂÂÂÂÂÂalignment.
ÂÂÂÂ
ÂÂÂÂ2. GenFw tool was enhanced to sync ELF's section alignment to PE header.
ÂÂÂÂÂÂÂBefore the enhancement, the section alignment of converted PE image
ÂÂÂÂÂÂÂalways equals to 0x20.
ÂÂÂÂ
ÂÂÂÂIf only with #1 change, GCC49 build image won't hang in PeiCore because
ÂÂÂÂthe converted PE image still claims 0x20 section alignment which is
ÂÂÂÂaligned to the align setting set in FDF file. But later with #2 change,
ÂÂÂÂthe converted PE image starts to claims 0x40 section alignment, while
ÂÂÂÂbuild tool still puts the PEIM in 0x20 aligned address, resulting the
ÂÂÂÂPeCoffLoaderLoadImage() reports IMAGE_ERROR_INVALID_SECTION_ALIGNMENT
ÂÂÂÂerror.
ÂÂÂÂ
ÂÂÂÂContributed-under: TianoCore Contribution Agreement 1.0
ÂÂÂÂSigned-off-by: Ruiyu Ni <ruiyu.ni@xxxxxxxxx>
ÂÂÂÂReviewed-by: Liming Gao <liming.gao@xxxxxxxxx>
ÂÂÂÂReviewed-by: Laszlo Ersek <lersek@xxxxxxxxxx>
ÂÂÂÂ
ÂÂÂÂgit-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17902 
6f19259b-4bc3-4df7-8a09-765794883524


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