[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Xen-devel] [PATCH] efi/libstub/fdt: Standardize the names of EFI stub parameters
- To: Mark Rutland <mark.rutland@xxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
- From: Ian Campbell <ian.campbell@xxxxxxxxxx>
- Date: Thu, 10 Sep 2015 13:58:25 +0100
- Cc: "devicetree@xxxxxxxxxxxxxxx" <devicetree@xxxxxxxxxxxxxxx>, "linux-efi@xxxxxxxxxxxxxxx" <linux-efi@xxxxxxxxxxxxxxx>, "ard.biesheuvel@xxxxxxxxxx" <ard.biesheuvel@xxxxxxxxxx>, "daniel.kiper@xxxxxxxxxx" <daniel.kiper@xxxxxxxxxx>, "linux-doc@xxxxxxxxxxxxxxx" <linux-doc@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "leif.lindholm@xxxxxxxxxx" <leif.lindholm@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>, "julien.grall@xxxxxxxxxx" <julien.grall@xxxxxxxxxx>, "freebsd-arm@xxxxxxxxxxx" <freebsd-arm@xxxxxxxxxxx>, "matt.fleming@xxxxxxxxx" <matt.fleming@xxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, "jbeulich@xxxxxxxx" <jbeulich@xxxxxxxx>, Shannon Zhao <zhaoshenglong@xxxxxxxxxx>, "peter.huangpeng@xxxxxxxxxx" <peter.huangpeng@xxxxxxxxxx>, "christoffer.dall@xxxxxxxxxx" <christoffer.dall@xxxxxxxxxx>, "shannon.zhao@xxxxxxxxxx" <shannon.zhao@xxxxxxxxxx>
- Delivery-date: Thu, 10 Sep 2015 12:58:33 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On Thu, 2015-09-10 at 13:15 +0100, Mark Rutland wrote:
> > In any case this should be separate from the shim ABI discussion.
>
> I disagree; I think this is very much relevant to the ABI discussion.
> That's not to say that I insist on a particular approach, but I think
> that they need to be considered together.
Taking a step back, the reason for using the EFI stub parameters is only
(AFAIK) in order to be able to locate the ACPI RDSP (the root table
pointer), which as it happens is normally passed via one of the EFI
firmware tables.
If there was a way to achieve that goal (i.e. another way to find the RSDP)
without opening the can of UEFI worms then we could consider that opiton
too.
a way != the legacy x86 thing of scanning low memory of the signature, of
course.
Ian.
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel
|
