Re: [tip:x86/asm] x86/mm/64: Enable vmapped stacks (CONFIG_HAVE_ARCH_VMAP_STACK=y)

[Matt Fleming]

On Wed, 24 Aug, at 06:03:04AM, tip-bot for Andy Lutomirski wrote:
> Commit-ID:  e37e43a497d5a8b7c0cc1736d56986f432c394c9
> Gitweb:     http://git.kernel.org/tip/e37e43a497d5a8b7c0cc1736d56986f432c394c9
> Author:     Andy Lutomirski <luto@xxxxxxxxxx>
> AuthorDate: Thu, 11 Aug 2016 02:35:23 -0700
> Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
> CommitDate: Wed, 24 Aug 2016 12:11:42 +0200
> 
> x86/mm/64: Enable vmapped stacks (CONFIG_HAVE_ARCH_VMAP_STACK=y)
> 
> This allows x86_64 kernels to enable vmapped stacks by setting
> HAVE_ARCH_VMAP_STACK=y - which enables the CONFIG_VMAP_STACK=y
> high level Kconfig option.
> 
> There are a couple of interesting bits:

This commit broke booting EFI mixed mode kernels. Here's what I've got
queued up to fix it.

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