On 08/19/20 20:46, Michael Brown wrote:
> On 19/08/2020 19:13, Laszlo Ersek wrote:
>> I'm still undecided whether option#43 / tag#6 / bit#3 being clear means
>> we should *ignore* PXE_BOOT_SERVERS (tag#8), but I'm willing to defer to
>> you on that. So, I can give a cautious
>>
>> Reviewed-by: Laszlo Ersek <ler...@redhat.com>
>>
>> for this patch.
>
> FWIW, iPXE's equivalent logic (based on a combination of what the PXE
> spec says and what the Intel reference PXE implementation actually does,
> which is not necessarily the same thing) is to *ignore* PXE_BOOT_SERVERS
> if a DHCP filename is available and option 43 tag 6 bit 3 is *set*.
Sorry, I expressed my concern incorrectly (I think I was tripped up by
the typo in Maciej's commit message).
It's about bit#2 in PXE_DISCOVERY_CONTROL.
The question is whether bit#2 is *equivalent* to adhering to
PXE_BOOT_SERVERS ("if, and only if").
When bit#2 is set, the spec says we must. OK.
When bit#2 is clear, the spec doesn't say anything. So two
interpretations are possible, "we still may consider PXE_BOOT_SERVERS",
and "we must not consider PXE_BOOT_SERVERS".
Anyway -- I'm sending this just to explain my earlier email. My main
point remains:
11640b08-6f42-e4d8-356d-91d4bdf86c2c@redhat.com">http://mid.mail-archive.com/11640b08-6f42-e4d8-356d-91d4bdf86c2c@redhat.com
(alt link: https://edk2.groups.io/g/devel/message/64530)
Thanks
Laszlo
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#64535): https://edk2.groups.io/g/devel/message/64535
Mute This Topic: https://groups.io/mt/76290910/21656
Group Owner: devel+ow...@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
