Re: [tip:x86/urgent] x86/mm/kaslr: Use the _ASM_MUL macro for multiplication to work around Clang incompatibility

[Peter Zijlstra]

On Fri, May 05, 2017 at 01:11:47AM -0700, tip-bot for Matthias Kaehlcke wrote:
> Commit-ID:  121843eb02a6e2fa30aefab64bfe183c97230c75
> Gitweb:     http://git.kernel.org/tip/121843eb02a6e2fa30aefab64bfe183c97230c75
> Author:     Matthias Kaehlcke <mka@xxxxxxxxxxxx>
> AuthorDate: Mon, 1 May 2017 15:47:41 -0700
> Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
> CommitDate: Fri, 5 May 2017 08:31:05 +0200
> 
> x86/mm/kaslr: Use the _ASM_MUL macro for multiplication to work around Clang incompatibility
> 
> The constraint "rm" allows the compiler to put mix_const into memory.
> When the input operand is a memory location then MUL needs an operand
> size suffix, since Clang can't infer the multiplication width from the
> operand.

*sigh*, this is another shining example of how LLVM is a better, faster
moving compiler?