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Re: [Qemu-devel] [PATCH v7 1/4] isapc: Fix non-KVM qemu boot (read/write

From: Kevin O'Connor
Subject: Re: [Qemu-devel] [PATCH v7 1/4] isapc: Fix non-KVM qemu boot (read/write memory for isapc BIOS)
Date: Thu, 30 May 2013 22:06:12 -0400
User-agent: Mutt/1.5.21 (2010-09-15)

On Wed, May 29, 2013 at 01:27:24AM -0700, Jordan Justen wrote:
> The isapc machine with seabios currently requires the BIOS region
> to be read/write memory rather than read-only memory.
> KVM currently cannot support the BIOS as a ROM region, but qemu
> in non-KVM mode can. Based on this, isapc machine currently only
> works with KVM.
> To work-around this isapc issue, this change avoids marking the
> BIOS as readonly for isapc.

How about changing the code to always make the ROM read/write (instead
of doing it only on isapc).  Currently, if the rom is marked as
read-only, then SeaBIOS makes it read/write as the first thing it
does.  So, making it read-only doesn't really serve any purpose.


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