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Re: [Qemu-devel] [PATCH 0/2] Fix wide ioport access cracking


From: Gerhard Wiesinger
Subject: Re: [Qemu-devel] [PATCH 0/2] Fix wide ioport access cracking
Date: Thu, 11 Aug 2011 10:25:54 +0200 (CEST)
User-agent: Alpine 2.02 (LFD 1266 2009-07-14)

Hello Avi,

Thank for the fast fix. Unfortunatly it still doesn't work (but LSI BIOS is initialized correctly).

I'm getting at boot time:
qemu-system-x86_64: /qemu-kvm-test/memory.c:1168: memory_region_del_subregion: Assertion `subregion->parent == mr' failed.

Thnx.

Ciao,
Gerhard

--
http://www.wiesinger.com/


On Thu, 11 Aug 2011, Avi Kivity wrote:

The memory API automatically cracks wide memory accesses into narrower
(usually byte) accesses when needed.  Unfortunately this wasn't implemented
for ioports, leading to an lsi53c895a failure.

This series implements cracking for ioports as well.

Note that the dual implementation is due to the fact the memory API is layered
on top of the original qemu API; eventually the same code will be used for
both ioports and mmio.

Avi Kivity (2):
 memory: abstract cracking of write access ops into a function
 memory: crack wide ioport accesses into smaller ones when needed

memory.c |  120 +++++++++++++++++++++++++++++++++++++++----------------------
1 files changed, 77 insertions(+), 43 deletions(-)

--
1.7.5.3






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