Re: [Xen-devel] [PATCH 4/4] xen: arm32: don't force the compiler to allocate a dummy register

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Ian,

On 03/17/2014 01:52 PM, Ian Campbell wrote:
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> ---
>  xen/include/asm-arm/arm32/page.h      |   14 ++++++--------
>  xen/include/asm-arm/arm32/processor.h |    4 ++++
>  2 files changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/xen/include/asm-arm/arm32/page.h 
> b/xen/include/asm-arm/arm32/page.h
> index 27027d8..beebe8b 100644
> --- a/xen/include/asm-arm/arm32/page.h
> +++ b/xen/include/asm-arm/arm32/page.h
> @@ -37,15 +37,14 @@ static inline void write_pte(lpae_t *p, lpae_t pte)
>   */
>  static inline void flush_xen_text_tlb_local(void)
>  {
> -    register unsigned long r0 asm ("r0");

Good to see it's removed :). It was a GNU C extension and preventing Xen
to build on clang.

Acked-by: Julien Grall <julien.grall@xxxxxxxxxx>

Regards,

-- 
Julien Grall

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