linux-kernel - Re: [GIT PULL] Last straggler for 4.20-rc8 or final

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Date:   Sat, 22 Dec 2018 21:59:16 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Borislav Petkov <bp@...en8.de>, torvalds@...ux-foundation.org,
        linux-kernel@...r.kernel.org, rkrcmar@...hat.com,
        kvm@...r.kernel.org
Subject: Re: [GIT PULL] Last straggler for 4.20-rc8 or final


* Paolo Bonzini <pbonzini@...hat.com> wrote:

> On 21/12/18 23:40, Borislav Petkov wrote:
> > + mingo.
> > 
> > On Fri, Dec 21, 2018 at 02:09:02PM +0100, Paolo Bonzini wrote:
> >> Linus,
> >>
> >> The following changes since commit 7566ec393f4161572ba6f11ad5171fd5d59b0fbd:
> >>
> >>   Linux 4.20-rc7 (2018-12-16 15:46:55 -0800)
> >>
> >> are available in the git repository at:
> >>
> >>   https://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus
> >>
> >> for you to fetch changes up to 3cf85f9f6bd7b172122865432b4c6f0ec844e22a:
> >>
> >>   KVM: x86: nSVM: fix switch to guest mmu (2018-12-19 22:19:22 +0100)
> >>
> >> A simple patch for a pretty bad bug.  I haven't yet sent my 4.21 pull
> >> request because currently I'm waiting for a patch to be removed from
> >> tip (MPX removal breaks KVM live migration and was committed without
> >> Cc or Ack from me) and until that happens I cannot finalize my
> >> conflict resolution instructions.
> > 
> > Lemme make sure I understand it correctly: you'd like us to not send
> > 
> > https://git.kernel.org/tip/eb012ef3b4e331ae479dd7cd9378041d9b7f851c
> > 
> > up now and delay it for 4.22, right?
> 
> Right, and also I will have to provide you with a topic branch to base
> that patch on.

Ok - x86/mpx delayed for v4.22 at least.

Can we turn off CONFIG_X86_INTEL_MPX configurability in the Kconfig, via 
a patch like below?

Thanks,

	Ingo

 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8689e794a43c..20fd5695f265 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1870,6 +1870,7 @@ config X86_INTEL_MPX
 	def_bool n
 	# Note: only available in 64-bit mode due to VMA flags shortage
 	depends on CPU_SUP_INTEL && X86_64
+	depends on DEPRECATED
 	select ARCH_USES_HIGH_VMA_FLAGS
 	---help---
 	  MPX provides hardware features that can be used in