[SeaBIOS] [PATCH] paravirt: Allow both Red Hat and Amazon PCI HB subsystem vendor and device ids
kraxel at redhat.com
Mon Jan 8 11:11:44 CET 2018
> >> @@ -83,8 +83,8 @@ static void qemu_detect(void)
> >> - if (sv != 0x1af4 || /* Red Hat, Inc */
> >> - sd != 0x1100) /* Qemu virtual machine */
> >> + if (!(sv == 0x1af4 && sd == 0x1100) && /* Red Hat, Inc. QEMU VM */
> >> + !(sv == 0x1d0f && sd == 0x1237)) /* Amazon.com, Inc. i440fx VM */
> >> return;
> > Is the above needed for a generally available VM software or product?
> > Or is this internal to Amazon?
> > -Kevin
> 1d0f:1237 are the subsystem vendor and device ids of the i440fx emulation
> in the EC2 machine model, which is what we're using for:
> * https://aws.amazon.com/ec2/instance-types/c5/
> * https://aws.amazon.com/ec2/instance-types/m5/
> Today, the EC2 machine model isn't open source.
So I guess not based on qemu? Otherwise you would have some GPL issues ...
How big are the differences to qemu? Does it have fw_cfg?
Should we have a separate PF_EC2 flag?
> However, we're not excluding
> the option of making it generally available in the future.
That would be good. Sometimes it is quite helpful to see the host-side
changes when reviewing firmware patches.
PS: sorry for the delay, just back to work after weeks of sick leave due
to a broken finger.
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