From: Borislav Petkov <bp@alien8.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org,
Michael Matz <matz@suse.de>, Dave Jiang <dave.jiang@intel.com>,
Borislav Petkov <bp@suse.de>, Tony Luck <tony.luck@intel.com>,
x86 <x86@kernel.org>
Subject: Re: [tip: x86/pasid] x86/asm: Carve out a generic movdir64b() helper for general usage
Date: Wed, 7 Oct 2020 23:13:27 +0200 [thread overview]
Message-ID: <20201007211327.GN5607@zn.tnic> (raw)
In-Reply-To: <20201007170835.GM2628@hirez.programming.kicks-ass.net>
On Wed, Oct 07, 2020 at 07:08:35PM +0200, Peter Zijlstra wrote:
> (%rdx), %rax, surely?
Right, later. Already tagged the branch so that Vinod can base stuff ontop.
> Also, that's a horrible convention, but I suppose (%rdx), (%rax) was
> out?
See the end of this mail:
https://lkml.kernel.org/r/alpine.LSU.2.20.2009241356020.20802@wotan.suse.de
> Can we pretty please get a binutils version that knows about this
> instruction, such that we know when we can get rid of the silly .byte
> encoded mess?
It looks like support for this insn got introduced in this binutils commit:
c0a30a9f0ab4 ("Enable Intel MOVDIRI, MOVDIR64B instructions")
So I guess from 2.31 onwards:
$ git tag --contains c0a30a9f0ab48
binutils-2_31
binutils-2_31_1
binutils-2_32
binutils-2_33
binutils-2_33_1
binutils-2_34
binutils-2_35
binutils-2_35_1
gdb-8.2-release
gdb-8.2.1-release
gdb-8.3-release
gdb-8.3.1-release
gdb-9.1-release
gdb-9.2-release
...
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2020-10-07 21:13 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-05 15:11 [PATCH v7 0/5] Add shared workqueue support for idxd driver Dave Jiang
2020-10-05 15:11 ` [PATCH v7 1/5] x86/asm: Carve out a generic movdir64b() helper for general usage Dave Jiang
2020-10-07 16:14 ` [tip: x86/pasid] " tip-bot2 for Dave Jiang
2020-10-07 17:08 ` Peter Zijlstra
2020-10-07 21:13 ` Borislav Petkov [this message]
2020-10-08 6:49 ` Peter Zijlstra
2020-10-05 15:11 ` [PATCH v7 2/5] x86/asm: Add an enqcmds() wrapper for the ENQCMDS instruction Dave Jiang
2020-10-05 15:11 ` [PATCH v7 3/5] dmaengine: idxd: Add shared workqueue support Dave Jiang
2020-10-05 15:11 ` [PATCH v7 4/5] dmaengine: idxd: Clean up descriptors with fault error Dave Jiang
2020-10-05 15:11 ` [PATCH v7 5/5] dmaengine: idxd: Add ABI documentation for shared wq Dave Jiang
2020-10-07 7:01 ` [PATCH v7 0/5] Add shared workqueue support for idxd driver Vinod Koul
2020-10-07 8:48 ` Borislav Petkov
2020-10-07 9:53 ` Vinod Koul
2020-10-07 10:04 ` Borislav Petkov
2020-10-07 14:57 ` Vinod Koul
2020-10-07 16:16 ` Borislav Petkov
2020-10-07 16:50 ` Dave Jiang
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