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Date: Mon, 23 Nov 2020 10:34:16 -0800
From: Sami Tolvanen <>
To: David Brazdil <>
Cc: Masahiro Yamada <>, Steven Rostedt <>, 
	Will Deacon <>, Josh Poimboeuf <>, 
	Peter Zijlstra <>, Greg Kroah-Hartman <>, 
	"Paul E. McKenney" <>, Kees Cook <>, 
	Nick Desaulniers <>, 
	clang-built-linux <>, 
	Kernel Hardening <>, 
	linux-arch <>, 
	linux-arm-kernel <>, 
	linux-kbuild <>, LKML <>,
Subject: Re: [PATCH v7 15/17] KVM: arm64: disable LTO for the nVHE directory

On Mon, Nov 23, 2020 at 2:21 AM David Brazdil <> wrote:
> Hey Sami,
> On Wed, Nov 18, 2020 at 02:07:29PM -0800, Sami Tolvanen wrote:
> > We use objcopy to manipulate ELF binaries for the nVHE code,
> > which fails with LTO as the compiler produces LLVM bitcode
> > instead. Disable LTO for this code to allow objcopy to be used.
> We now partially link the nVHE code (generating machine code) before objcopy,
> so I think you should be able to drop this patch now. Tried building your
> branch without it, ran a couple of unit tests and all seems fine.

Great, thanks for testing this, David! I'll drop this patch from v8.


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