From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: Borislav Petkov <bp@alien8.de>
Cc: "Anvin, H Peter" <h.peter.anvin@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
David Airlie <airlied@linux.ie>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"x86@kernel.org" <x86@kernel.org>
Subject: Re: [PATCH 3/6] x86: Add support for the clwb instruction
Date: Thu, 13 Nov 2014 10:47:20 -0700 [thread overview]
Message-ID: <1415900840.19506.1.camel@theros.lm.intel.com> (raw)
In-Reply-To: <20141112141250.GE16807@pd.tnic>
On Wed, 2014-11-12 at 15:12 +0100, Borislav Petkov wrote:
> On Wed, Nov 12, 2014 at 01:38:45PM +0000, Anvin, H Peter wrote:
> > No, it doesn't. x86 requires 3.4+ at a minimum.
>
> The only test I see is:
>
> #if GCC_VERSION < 30200
> # error Sorry, your compiler is too old - please upgrade it.
> #endif
>
> And even if we do require 3.4, the build fails with 4.1+ so...
Ah, dang, you're right. Okay, I'll figure out how to do this without
using xsaveopt.
Thank you for pointing this out.
- Ross
next prev parent reply other threads:[~2014-11-13 17:48 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-11 18:43 [PATCH 0/6] add support for new persistent memory instructions Ross Zwisler
2014-11-11 18:43 ` [PATCH 1/6] x86: Add support for the pcommit instruction Ross Zwisler
2014-11-13 3:25 ` Andy Lutomirski
2014-11-14 21:07 ` Ross Zwisler
2014-11-14 21:09 ` Andy Lutomirski
2014-11-11 18:43 ` [PATCH 2/6] x86/alternative: Add alternative_io_2 Ross Zwisler
2014-11-11 18:43 ` [PATCH 3/6] x86: Add support for the clwb instruction Ross Zwisler
2014-11-11 19:12 ` Borislav Petkov
2014-11-11 19:19 ` Borislav Petkov
2014-11-11 19:19 ` Borislav Petkov
2014-11-11 19:40 ` Ross Zwisler
2014-11-11 19:46 ` Borislav Petkov
2014-11-11 19:46 ` Borislav Petkov
2014-11-11 19:54 ` Ross Zwisler
2014-11-11 19:48 ` Ross Zwisler
2014-11-11 19:54 ` Borislav Petkov
2014-11-11 19:54 ` Borislav Petkov
2014-11-12 12:39 ` Borislav Petkov
2014-11-12 12:39 ` Borislav Petkov
2014-11-12 13:38 ` Anvin, H Peter
2014-11-12 14:12 ` Borislav Petkov
2014-11-12 14:12 ` Borislav Petkov
2014-11-13 17:47 ` Ross Zwisler [this message]
2014-11-11 18:43 ` [PATCH 4/6] x86: Use clwb in clflush_cache_range Ross Zwisler
2014-11-11 18:43 ` [PATCH 5/6] x86: Use clwb in drm_clflush_page Ross Zwisler
2014-11-11 18:43 ` [PATCH 6/6] x86: Use clwb in drm_clflush_virt_range Ross Zwisler
2014-11-13 3:14 ` Andy Lutomirski
2014-11-13 11:20 ` Borislav Petkov
2014-11-13 11:20 ` Borislav Petkov
2014-11-13 16:38 ` Andy Lutomirski
2014-11-13 17:11 ` Borislav Petkov
2014-11-13 17:11 ` Borislav Petkov
2014-11-13 17:33 ` Ville Syrjälä
2014-11-13 17:47 ` Borislav Petkov
2014-11-13 17:47 ` Borislav Petkov
2014-11-13 18:14 ` Ville Syrjälä
2014-11-13 18:14 ` Ville Syrjälä
2014-11-13 18:43 ` Ville Syrjälä
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