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xen-devel
Re: [Xen-devel] [PATCH 2 of 3] Enable UEFI BIOS(OVMF) support in Xen-uns
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To: |
Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [PATCH 2 of 3] Enable UEFI BIOS(OVMF) support in Xen-unstable HVM |
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From: |
Keir Fraser <keir@xxxxxxx> |
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Date: |
Tue, 09 Aug 2011 11:03:37 +0100 |
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Cc: |
Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, "edk2-devel@xxxxxxxxxxxxxxxxxxxxx" <edk2-devel@xxxxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Andrei Warkentin <andreiw@xxxxxxxxxxxx>, Jordan Justen <jljusten@xxxxxxxxx>, Bei Guan <gbtju85@xxxxxxxxx> |
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Tue, 09 Aug 2011 03:06:56 -0700 |
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[Xen-devel] [PATCH 2 of 3] Enable UEFI BIOS(OVMF) support in Xen-unstable HVM |
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On 09/08/2011 10:58, "Ian Campbell" <Ian.Campbell@xxxxxxxxxxxxx> wrote:
>> Apart from the pci_setup hook I just emailed about, hopefully we can avoid
>> code duplication in the init_vm86_tss hook as well. I'm not sure why we even
>> need the hook -- I'll need to check what it's for with Ian Campbell (cc'ed).
>
> I dunno ;-) I had assumed it was a rombios specific thing when I
> refactored for SeaBIOS (which doesn't implement the hook).
>
> Thinking about it again is this VM86 TSS a hangover from the days where
> we used to "emulate" realmode using vm86 in the HVM guest context (IIRC
> that was called vmxassist?). Perhaps the hook can be simply dropped?
No, as you correctly surmised it is for Tim's
realmode-emulation-acceleration. It is applicable to all guests regardless
of BIOS. Shall I move it back out into common code in hvmloader.c, then?
-- Keir
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