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From: Anthony Liguori <anthony@codemonkey.ws>
To: Alexander Graf <agraf@suse.de>
Cc: Gleb Natapov <gleb@redhat.com>,
	Kevin O'Connor <kevin@koconnor.net>,
	qemu-devel@nongnu.org, Aurelien Jarno <aurelien@aurel32.net>,
	Sebastian Herbszt <herbszt@gmx.de>
Subject: [Qemu-devel] Re: [PATCH v2] [0.12] Map BIOS f-segment as RAM, not as ROM
Date: Fri, 04 Dec 2009 07:48:31 -0600	[thread overview]
Message-ID: <4B19132F.2080205@codemonkey.ws> (raw)
In-Reply-To: <1259922793-20433-1-git-send-email-agraf@suse.de>

Alexander Graf wrote:
> SeaBIOS needs to write to the f-segment. So it needs to have some way to set
> that from read-only to read-write, write in it and when it's done set it to
> read-only again.
>
> On PCI we have a mechanism for that. The ISA machine does not though. To stay
> regression free and happily enable users to continue using the -M isapc machine
> let's just map it as RAM. The BIOS on PCI will set it to r/o later either way.
>
> Signed-off-by: Alexander Graf <agraf@suse.de>
>   

Thanks Alex.  Figuring out what to do here has been on my todo and this 
seems like a reasonable solution.

Regards,

Anthony Liguori

  reply	other threads:[~2009-12-04 13:48 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-04 10:33 [Qemu-devel] [PATCH v2] [0.12] Map BIOS f-segment as RAM, not as ROM Alexander Graf
2009-12-04 13:48 ` Anthony Liguori [this message]
2009-12-04 14:10 ` [Qemu-devel] " Gleb Natapov
2009-12-05 16:31 ` Kevin O'Connor

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