Re: [PATCH] x86_64: Add memcpy32_toio to write to PCI MMIO

On Tue, Sep 09, 2014 at 10:01:18AM +0200, Clemens Ladisch wrote: > Subhransu S. Prusty wrote: > > This is needed because the hardware > > Which hardware? Every x86-64 CPU ever built by AMD, Intel, and VIA? Baytrail and few other SoCs > > > does not support 64-bit moveq insructions while writing

Re: [PATCH] x86_64: Add memcpy32_toio to write to PCI MMIO

On Tue, Sep 09, 2014 at 10:01:18AM +0200, Clemens Ladisch wrote: Subhransu S. Prusty wrote: This is needed because the hardware Which hardware? Every x86-64 CPU ever built by AMD, Intel, and VIA? Baytrail and few other SoCs does not support 64-bit moveq insructions while writing to PCI

Re: [PATCH] x86_64: Add memcpy32_toio to write to PCI MMIO

Subhransu S. Prusty wrote: > This is needed because the hardware Which hardware? Every x86-64 CPU ever built by AMD, Intel, and VIA? > does not support 64-bit moveq insructions while writing to PCI MMIO. > +#ifndef CONFIG_X86_64 > +#define MEMCPY_TOIO memcpy_toio > +#else > +#define

Re: [PATCH] x86_64: Add memcpy32_toio to write to PCI MMIO

Subhransu S. Prusty wrote: This is needed because the hardware Which hardware? Every x86-64 CPU ever built by AMD, Intel, and VIA? does not support 64-bit moveq insructions while writing to PCI MMIO. +#ifndef CONFIG_X86_64 +#define MEMCPY_TOIO memcpy_toio +#else +#define MEMCPY_TOIO

[PATCH] x86_64: Add memcpy32_toio to write to PCI MMIO

This is needed because the hardware does not support 64-bit moveq insructions while writing to PCI MMIO. Signed-off-by: Subhransu S. Prusty Signed-off-by: Vinod Koul --- arch/x86/include/asm/io.h | 22 ++ 1 file changed, 22 insertions(+) diff --git

[PATCH] x86_64: Add memcpy32_toio to write to PCI MMIO

This is needed because the hardware does not support 64-bit moveq insructions while writing to PCI MMIO. Signed-off-by: Subhransu S. Prusty subhransu.s.pru...@intel.com Signed-off-by: Vinod Koul vinod.k...@intel.com --- arch/x86/include/asm/io.h | 22 ++ 1 file changed, 22