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Re: [Xen-devel] [Patch] avoid unnecessary loading NIC rom.

  • To: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Thu, 18 Dec 2008 15:00:46 +0000
  • Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Thu, 18 Dec 2008 07:01:05 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AclhILIAe6TwvhXseEy8hrIkVNUDrgAALXLt
  • Thread-topic: [Xen-devel] [Patch] avoid unnecessary loading NIC rom.

On 18/12/2008 14:55, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:

>>> There's a 'F10 to select boot device' option in rombios, so you can't
>>> determine this in hvmloader.
>> Exactly. But if gPXE rom is loaded,
>> hvmloader cannot load some option ROMs of raal PCI cards.
>> I suspect we don't use F10 option for PXE boot.
>> Do you have good idea?
> Not really. Perhaps scan_etherboot_nic() after pci_load_option_roms(), so the
> latter takes priority?

Another possibility is to let option ROMs load up to 0xe9000 rather than
just 0xe0000. There's nothing in the range 0xe0000-0xe9000 right now; it's
36kB of wasted space.

 -- Keir

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