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From: Ingo Molnar <mingo@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "Kyle Huey" <me@kylehuey.com>,
	"Robert O'Callahan" <robert@ocallahan.org>,
	"Andy Lutomirski" <luto@kernel.org>,
	"Ingo Molnar" <mingo@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Jeff Dike" <jdike@addtoit.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Alexander Viro" <viro@zeniv.linux.org.uk>,
	"Shuah Khan" <shuah@kernel.org>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	"Borislav Petkov" <bp@suse.de>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
	"Len Brown" <len.brown@intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	"Dmitry Safonov" <dsafonov@virtuozzo.com>,
	"David Matlack" <dmatlack@google.com>,
	"Nadav Amit" <nadav.amit@gmail.com>,
	linux-kernel@vger.kernel.org,
	user-mode-linux-devel@lists.sourceforge.net,
	user-mode-linux-user@lists.sourceforge.net,
	linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	kvm@vger.kernel.org
Subject: Re: [PATCH v12 2/7] x86/arch_prctl/64: Rename do_arch_prctl to do_arch_prctl_64
Date: Fri, 18 Nov 2016 09:16:44 +0100	[thread overview]
Message-ID: <20161118081644.GD15912@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1611180827240.3640@nanos>


* Thomas Gleixner <tglx@linutronix.de> wrote:

> On Fri, 18 Nov 2016, Ingo Molnar wrote:
> 
> > 
> > * Kyle Huey <me@kylehuey.com> wrote:
> > 
> > > In order to introduce new arch_prctls that are not 64 bit only, rename the
> > > existing 64 bit implementation to do_arch_prctl_64(). Also rename the second
> > > argument to arch_prctl(), which will no longer always be an address.
> > 
> > >  #ifdef CONFIG_X86_64
> > >  void entry_SYSCALL_64(void);
> > > +long do_arch_prctl_64(struct task_struct *task, int code, unsigned long arg2);
> > >  #endif
> > 
> > Could you please also rename the weirdly named 'code' argument to 'option',
> > to be in line with the existing sys_prctl() interface nomenclature?
> 
> I'll fix that up when picking up the series. No need for another iteration, ok?

I think the main patch needs a bit of conceptual work still:

 - simpler ABI
 - better exec() behavior
 - simpler, better, faster implementation for the MSR writes

... see the mail I just wrote.

Thanks,

	Ingo


WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "Kyle Huey" <me@kylehuey.com>,
	"Robert O'Callahan" <robert@ocallahan.org>,
	"Andy Lutomirski" <luto@kernel.org>,
	"Ingo Molnar" <mingo@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Jeff Dike" <jdike@addtoit.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Alexander Viro" <viro@zeniv.linux.org.uk>,
	"Shuah Khan" <shuah@kernel.org>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	"Borislav Petkov" <bp@suse.de>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
	"Len Brown" <len.brown@intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	"Dmitry Safonov" <dsafonov@virtuozzo.com>,
	"David Matlack" <dmatlack@google.com>
Subject: Re: [PATCH v12 2/7] x86/arch_prctl/64: Rename do_arch_prctl to do_arch_prctl_64
Date: Fri, 18 Nov 2016 09:16:44 +0100	[thread overview]
Message-ID: <20161118081644.GD15912@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1611180827240.3640@nanos>


* Thomas Gleixner <tglx@linutronix.de> wrote:

> On Fri, 18 Nov 2016, Ingo Molnar wrote:
> 
> > 
> > * Kyle Huey <me@kylehuey.com> wrote:
> > 
> > > In order to introduce new arch_prctls that are not 64 bit only, rename the
> > > existing 64 bit implementation to do_arch_prctl_64(). Also rename the second
> > > argument to arch_prctl(), which will no longer always be an address.
> > 
> > >  #ifdef CONFIG_X86_64
> > >  void entry_SYSCALL_64(void);
> > > +long do_arch_prctl_64(struct task_struct *task, int code, unsigned long arg2);
> > >  #endif
> > 
> > Could you please also rename the weirdly named 'code' argument to 'option',
> > to be in line with the existing sys_prctl() interface nomenclature?
> 
> I'll fix that up when picking up the series. No need for another iteration, ok?

I think the main patch needs a bit of conceptual work still:

 - simpler ABI
 - better exec() behavior
 - simpler, better, faster implementation for the MSR writes

... see the mail I just wrote.

Thanks,

	Ingo

  reply	other threads:[~2016-11-18  8:16 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-17  2:06 [PATCH v12 0/7] x86/arch_prctl Add ARCH_[GET|SET]_CPUID for controlling the CPUID instruction Kyle Huey
2016-11-17  2:06 ` Kyle Huey
2016-11-17  2:06 ` [PATCH v12 1/7] x86/arch_prctl/64: Use SYSCALL_DEFINE2 to define sys_arch_prctl Kyle Huey
2016-11-17  2:06   ` Kyle Huey
2016-11-17  2:06 ` [PATCH v12 2/7] x86/arch_prctl/64: Rename do_arch_prctl to do_arch_prctl_64 Kyle Huey
2016-11-17  2:06   ` Kyle Huey
2016-11-18  7:27   ` Ingo Molnar
2016-11-18  7:27     ` Ingo Molnar
2016-11-18  7:28     ` Thomas Gleixner
2016-11-18  7:28       ` Thomas Gleixner
2016-11-18  8:16       ` Ingo Molnar [this message]
2016-11-18  8:16         ` Ingo Molnar
2016-11-18 16:39     ` Kyle Huey
2016-11-18 16:39       ` Kyle Huey
2016-11-29  9:26       ` Ingo Molnar
2016-11-29  9:26         ` Ingo Molnar
2016-11-17  2:06 ` [PATCH v12 3/7] x86/arch_prctl: Add do_arch_prctl_common Kyle Huey
2016-11-17  2:06   ` Kyle Huey
2016-11-17  2:06 ` [PATCH v12 4/7] x86/syscalls/32: Wire up arch_prctl on x86-32 Kyle Huey
2016-11-17  2:06   ` Kyle Huey
2016-11-18  7:30   ` Ingo Molnar
2016-11-18  7:30     ` Ingo Molnar
2016-11-17  2:06 ` [PATCH v12 5/7] x86/cpufeature: Detect CPUID faulting support Kyle Huey
2016-11-17  2:06   ` Kyle Huey
2016-11-17 16:51   ` Borislav Petkov
2016-11-17 16:51     ` Borislav Petkov
2016-11-17  2:06 ` [PATCH v12 6/7] x86/arch_prctl: Add ARCH_[GET|SET]_CPUID Kyle Huey
2016-11-17  2:06   ` Kyle Huey
2016-11-18  8:14   ` Ingo Molnar
2016-11-18  8:14     ` Ingo Molnar
2016-11-18  8:49     ` Thomas Gleixner
2016-11-18  8:49       ` Thomas Gleixner
2016-11-21  8:27       ` Ingo Molnar
2016-11-21  8:27         ` Ingo Molnar
2016-11-22 17:26         ` Andy Lutomirski
2016-11-22 17:26           ` Andy Lutomirski
2016-11-18 15:55     ` Kyle Huey
2016-11-18 15:55       ` Kyle Huey
2016-11-18 17:32     ` Andy Lutomirski
2016-11-18 17:32       ` Andy Lutomirski
2016-11-17  2:06 ` [PATCH v12 7/7] KVM: x86: virtualize cpuid faulting Kyle Huey
2016-11-17  2:06   ` Kyle Huey
2016-11-17 12:31   ` Paolo Bonzini
2016-11-17 12:31     ` Paolo Bonzini

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