[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH v7 1/4] isapc: Fix non-KVM qemu boot (read/write memory for isapc BIOS)
Date: Fri, 31 May 2013 14:48:17 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6

Il 31/05/2013 04:06, Kevin O'Connor ha scritto:
> 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.

I don't think SeaBIOS can rely on the value of the PAM registers when it
is started via a CPU reset (INIT), can it?


reply via email to

[Prev in Thread] Current Thread [Next in Thread]