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Re: [PATCH 0/2] arm64: Support HP Envy X2

From: Jon Masters
Subject: Re: [PATCH 0/2] arm64: Support HP Envy X2
Date: Thu, 29 Nov 2018 05:01:08 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0

On 11/28/18 9:31 AM, Alexander Graf wrote:

> I got a new toy this week: An HP Envy X2 system. This is one of those shiny
> new Qualcomm Snapdragon based Windows tablet/notebook hybrid things.

Cool! I've got one too, and hadn't poked since we looked a while back,
so it'll be great to have a motivation to look at this again soon!

> While running Windows on those is actually not a terribly bad experience now
> that WSL is out, I would like to see Linux run on those as well in the future.
> Unfortunately as far as I'm aware so far nobody was able to run self built
> binaries on the built-in UEFI version.
> Turns out, it's a problem with aligning the start of the header to 4k. Once
> we do that, binaries can be loaded just fine and run.
> So to maintain compatibility with that device, this patch set just bumps the
> header alignment to 4K always on arm64-efi. This shouldn't hurt too much for
> not affected targets and allows us to have a single grub binary that can then
> chain load Linux properly.

This is awesome work. Obvious when you know it, but glad you did the
hard work to figure that out. I'm thinking Leif is right, we should try
to get HP to fix their firmware, especially since we know what is
broken. If Leif ends up needing any help prodding HP, we can try to
figure out who to talk to, or ask some other friends for assistance.

I owe you another tea ;)


Computer Architect | Sent with my Fedora powered laptop

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