From: Andi Kleen <andi@firstfloor.org>
To: Keno Fischer <keno@juliacomputing.com>
Cc: linux-kernel@vger.kernel.org,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
"Borislav Petkov" <bp@suse.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Andi Kleen" <andi@firstfloor.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Kyle Huey" <khuey@kylehuey.com>,
"Robert O'Callahan" <robert@ocallahan.org>
Subject: Re: [RFC PATCH] x86/arch_prctl: Add ARCH_SET_XCR0 to mask XCR0 per-thread
Date: Sun, 17 Jun 2018 09:35:31 -0700 [thread overview]
Message-ID: <20180617163530.rvwf7fcukmoletgo@two.firstfloor.org> (raw)
In-Reply-To: <1529195582-64207-1-git-send-email-keno@alumni.harvard.edu>
Patch seems pointless if you can already control CPUID, which rr
supports. Just disable AVX512 in CPUID. All code using AVX should check
cpuid (or will fail anyways).
-Andi
next prev parent reply other threads:[~2018-06-17 16:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-17 0:33 [RFC PATCH] x86/arch_prctl: Add ARCH_SET_XCR0 to mask XCR0 per-thread Keno Fischer
2018-06-17 16:35 ` Andi Kleen [this message]
2018-06-17 16:48 ` Keno Fischer
2018-06-17 18:22 ` Keno Fischer
2018-06-18 16:58 ` Andi Kleen
2018-06-18 17:50 ` Keno Fischer
2018-06-19 13:43 ` Andi Kleen
2018-06-18 12:47 ` Dave Hansen
2018-06-18 14:42 ` Keno Fischer
2018-06-18 15:04 ` Dave Hansen
2018-06-18 15:13 ` Keno Fischer
2018-06-18 16:16 ` Dave Hansen
2018-06-18 17:22 ` Keno Fischer
2018-06-18 17:29 ` Dave Hansen
2018-06-18 17:43 ` Dave Hansen
2018-06-18 18:16 ` Keno Fischer
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