From: Anthony Liguori <anthony@codemonkey.ws>
To: Eric Northup <digitaleric@google.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, Avi Kivity <avi@redhat.com>,
KVM list <kvm@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] Next gen kvm api
Date: Fri, 03 Feb 2012 16:52:07 -0600 [thread overview]
Message-ID: <4F2C6517.3040203@codemonkey.ws> (raw)
In-Reply-To: <CAG7+5M0s_F93G3dPrRQaFMVv_hPzpd-wYEPApJUDGhh3vJuy-A@mail.gmail.com>
On 02/03/2012 12:07 PM, Eric Northup wrote:
> On Thu, Feb 2, 2012 at 8:09 AM, Avi Kivity<avi@redhat.com> wrote:
> [...]
>>
>> Moving to syscalls avoids these problems, but introduces new ones:
>>
>> - adding new syscalls is generally frowned upon, and kvm will need several
>> - syscalls into modules are harder and rarer than into core kernel code
>> - will need to add a vcpu pointer to task_struct, and a kvm pointer to
>> mm_struct
> - Lost a good place to put access control (permissions on /dev/kvm)
> for which user-mode processes can use KVM.
>
> How would the ability to use sys_kvm_* be regulated?
Why should it be regulated?
It's not a finite or privileged resource.
Regards,
Anthony Liguori
>
WARNING: multiple messages have this Message-ID (diff)
From: Anthony Liguori <anthony@codemonkey.ws>
To: Eric Northup <digitaleric@google.com>
Cc: Avi Kivity <avi@redhat.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
KVM list <kvm@vger.kernel.org>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [RFC] Next gen kvm api
Date: Fri, 03 Feb 2012 16:52:07 -0600 [thread overview]
Message-ID: <4F2C6517.3040203@codemonkey.ws> (raw)
In-Reply-To: <CAG7+5M0s_F93G3dPrRQaFMVv_hPzpd-wYEPApJUDGhh3vJuy-A@mail.gmail.com>
On 02/03/2012 12:07 PM, Eric Northup wrote:
> On Thu, Feb 2, 2012 at 8:09 AM, Avi Kivity<avi@redhat.com> wrote:
> [...]
>>
>> Moving to syscalls avoids these problems, but introduces new ones:
>>
>> - adding new syscalls is generally frowned upon, and kvm will need several
>> - syscalls into modules are harder and rarer than into core kernel code
>> - will need to add a vcpu pointer to task_struct, and a kvm pointer to
>> mm_struct
> - Lost a good place to put access control (permissions on /dev/kvm)
> for which user-mode processes can use KVM.
>
> How would the ability to use sys_kvm_* be regulated?
Why should it be regulated?
It's not a finite or privileged resource.
Regards,
Anthony Liguori
>
WARNING: multiple messages have this Message-ID (diff)
From: Anthony Liguori <anthony@codemonkey.ws>
To: Eric Northup <digitaleric@google.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, Avi Kivity <avi@redhat.com>,
KVM list <kvm@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [Qemu-devel] [RFC] Next gen kvm api
Date: Fri, 03 Feb 2012 16:52:07 -0600 [thread overview]
Message-ID: <4F2C6517.3040203@codemonkey.ws> (raw)
In-Reply-To: <CAG7+5M0s_F93G3dPrRQaFMVv_hPzpd-wYEPApJUDGhh3vJuy-A@mail.gmail.com>
On 02/03/2012 12:07 PM, Eric Northup wrote:
> On Thu, Feb 2, 2012 at 8:09 AM, Avi Kivity<avi@redhat.com> wrote:
> [...]
>>
>> Moving to syscalls avoids these problems, but introduces new ones:
>>
>> - adding new syscalls is generally frowned upon, and kvm will need several
>> - syscalls into modules are harder and rarer than into core kernel code
>> - will need to add a vcpu pointer to task_struct, and a kvm pointer to
>> mm_struct
> - Lost a good place to put access control (permissions on /dev/kvm)
> for which user-mode processes can use KVM.
>
> How would the ability to use sys_kvm_* be regulated?
Why should it be regulated?
It's not a finite or privileged resource.
Regards,
Anthony Liguori
>
next prev parent reply other threads:[~2012-02-03 22:52 UTC|newest]
Thread overview: 236+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-02 16:09 [RFC] Next gen kvm api Avi Kivity
2012-02-02 16:09 ` [Qemu-devel] " Avi Kivity
2012-02-02 22:13 ` Rob Earhart
2012-02-02 22:13 ` [Qemu-devel] " Rob Earhart
2012-02-02 22:16 ` Rob Earhart
2012-02-02 22:16 ` Rob Earhart
2012-02-05 13:14 ` Avi Kivity
2012-02-05 13:14 ` [Qemu-devel] " Avi Kivity
2012-02-06 17:41 ` Rob Earhart
2012-02-06 19:11 ` Anthony Liguori
2012-02-06 19:11 ` [Qemu-devel] " Anthony Liguori
2012-02-06 19:11 ` Anthony Liguori
2012-02-07 12:03 ` Avi Kivity
2012-02-07 12:03 ` [Qemu-devel] " Avi Kivity
2012-02-07 15:17 ` Anthony Liguori
2012-02-07 16:02 ` Avi Kivity
2012-02-07 16:18 ` Jan Kiszka
2012-02-07 16:18 ` [Qemu-devel] " Jan Kiszka
2012-02-07 16:18 ` Jan Kiszka
2012-02-07 16:21 ` Anthony Liguori
2012-02-07 16:21 ` Anthony Liguori
2012-02-07 16:29 ` Jan Kiszka
2012-02-07 16:29 ` Jan Kiszka
2012-02-15 13:41 ` Avi Kivity
2012-02-15 13:41 ` Avi Kivity
2012-02-07 16:19 ` Anthony Liguori
2012-02-15 13:47 ` Avi Kivity
2012-02-07 12:01 ` Avi Kivity
2012-02-03 2:09 ` Anthony Liguori
2012-02-03 2:09 ` [Qemu-devel] " Anthony Liguori
2012-02-03 2:09 ` Anthony Liguori
2012-02-04 2:08 ` Takuya Yoshikawa
2012-02-04 2:08 ` [Qemu-devel] " Takuya Yoshikawa
2012-02-04 2:08 ` Takuya Yoshikawa
2012-02-22 13:06 ` Peter Zijlstra
2012-02-22 13:06 ` Peter Zijlstra
2012-02-05 9:24 ` Avi Kivity
2012-02-05 9:24 ` [Qemu-devel] " Avi Kivity
2012-02-05 9:24 ` Avi Kivity
2012-02-07 1:08 ` Alexander Graf
2012-02-07 1:08 ` Alexander Graf
2012-02-07 1:08 ` Alexander Graf
2012-02-07 1:08 ` Alexander Graf
2012-02-07 12:24 ` [Qemu-devel] " Avi Kivity
2012-02-07 12:24 ` Avi Kivity
2012-02-07 12:24 ` Avi Kivity
2012-02-07 12:51 ` Alexander Graf
2012-02-07 12:51 ` Alexander Graf
2012-02-07 12:51 ` Alexander Graf
2012-02-07 13:16 ` Avi Kivity
2012-02-07 13:16 ` Avi Kivity
2012-02-07 13:16 ` Avi Kivity
2012-02-07 13:40 ` Alexander Graf
2012-02-07 13:40 ` Alexander Graf
2012-02-07 13:40 ` Alexander Graf
2012-02-07 14:21 ` Avi Kivity
2012-02-07 14:21 ` Avi Kivity
2012-02-07 14:21 ` Avi Kivity
2012-02-07 14:21 ` Avi Kivity
2012-02-07 14:39 ` [Qemu-devel] " Alexander Graf
2012-02-07 14:39 ` Alexander Graf
2012-02-07 14:39 ` Alexander Graf
2012-02-15 11:18 ` Avi Kivity
2012-02-15 11:18 ` Avi Kivity
2012-02-15 11:18 ` Avi Kivity
2012-02-15 11:57 ` Alexander Graf
2012-02-15 11:57 ` Alexander Graf
2012-02-15 11:57 ` Alexander Graf
2012-02-15 13:29 ` Avi Kivity
2012-02-15 13:29 ` Avi Kivity
2012-02-15 13:29 ` Avi Kivity
2012-02-15 13:37 ` Alexander Graf
2012-02-15 13:37 ` Alexander Graf
2012-02-15 13:37 ` Alexander Graf
2012-02-15 13:57 ` Avi Kivity
2012-02-15 13:57 ` Avi Kivity
2012-02-15 13:57 ` Avi Kivity
2012-02-15 14:08 ` Alexander Graf
2012-02-15 14:08 ` Alexander Graf
2012-02-15 14:08 ` Alexander Graf
2012-02-16 19:24 ` Avi Kivity
2012-02-16 19:24 ` Avi Kivity
2012-02-16 19:24 ` Avi Kivity
2012-02-16 19:24 ` Avi Kivity
2012-02-16 19:34 ` [Qemu-devel] " Alexander Graf
2012-02-16 19:34 ` Alexander Graf
2012-02-16 19:34 ` Alexander Graf
2012-02-16 19:38 ` Avi Kivity
2012-02-16 19:38 ` Avi Kivity
2012-02-16 19:38 ` Avi Kivity
2012-02-16 20:41 ` Scott Wood
2012-02-16 20:41 ` Scott Wood
2012-02-16 20:41 ` Scott Wood
2012-02-17 0:23 ` Alexander Graf
2012-02-17 0:23 ` Alexander Graf
2012-02-17 0:23 ` Alexander Graf
2012-02-17 18:27 ` Scott Wood
2012-02-17 18:27 ` Scott Wood
2012-02-17 18:27 ` Scott Wood
2012-02-18 9:49 ` Avi Kivity
2012-02-18 9:49 ` Avi Kivity
2012-02-18 9:49 ` Avi Kivity
2012-02-18 9:49 ` Avi Kivity
2012-02-17 0:19 ` [Qemu-devel] " Alexander Graf
2012-02-17 0:19 ` Alexander Graf
2012-02-17 0:19 ` Alexander Graf
2012-02-18 10:00 ` Avi Kivity
2012-02-18 10:00 ` Avi Kivity
2012-02-18 10:00 ` Avi Kivity
2012-02-18 10:00 ` Avi Kivity
2012-02-18 10:43 ` [Qemu-devel] " Alexander Graf
2012-02-18 10:43 ` Alexander Graf
2012-02-18 10:43 ` Alexander Graf
2012-02-15 19:17 ` Scott Wood
2012-02-15 19:17 ` Scott Wood
2012-02-15 19:17 ` Scott Wood
2012-02-12 7:10 ` Takuya Yoshikawa
2012-02-12 7:10 ` Takuya Yoshikawa
2012-02-12 7:10 ` Takuya Yoshikawa
2012-02-12 7:10 ` Takuya Yoshikawa
2012-02-15 13:32 ` [Qemu-devel] " Avi Kivity
2012-02-15 13:32 ` Avi Kivity
2012-02-15 13:32 ` Avi Kivity
2012-02-07 15:23 ` Anthony Liguori
2012-02-07 15:23 ` Anthony Liguori
2012-02-07 15:23 ` Anthony Liguori
2012-02-07 15:28 ` Alexander Graf
2012-02-07 15:28 ` Alexander Graf
2012-02-07 15:28 ` Alexander Graf
2012-02-08 17:20 ` Alan Cox
2012-02-08 17:20 ` Alan Cox
2012-02-08 17:20 ` Alan Cox
2012-02-15 13:33 ` Avi Kivity
2012-02-15 13:33 ` Avi Kivity
2012-02-15 13:33 ` Avi Kivity
2012-02-15 22:14 ` Arnd Bergmann
2012-02-15 22:14 ` Arnd Bergmann
2012-02-10 3:07 ` Jamie Lokier
2012-02-10 3:07 ` Jamie Lokier
2012-02-03 18:07 ` Eric Northup
2012-02-03 18:07 ` [Qemu-devel] " Eric Northup
2012-02-03 18:07 ` Eric Northup
2012-02-03 22:52 ` Anthony Liguori [this message]
2012-02-03 22:52 ` [Qemu-devel] " Anthony Liguori
2012-02-03 22:52 ` Anthony Liguori
2012-02-06 19:46 ` Scott Wood
2012-02-06 19:46 ` Scott Wood
2012-02-07 6:58 ` Michael Ellerman
2012-02-07 6:58 ` [Qemu-devel] " Michael Ellerman
2012-02-07 6:58 ` Michael Ellerman
2012-02-07 10:04 ` Alexander Graf
2012-02-07 10:04 ` Alexander Graf
2012-02-15 22:21 ` Arnd Bergmann
2012-02-15 22:21 ` Arnd Bergmann
2012-02-16 1:04 ` Michael Ellerman
2012-02-16 1:04 ` [Qemu-devel] " Michael Ellerman
2012-02-16 1:04 ` Michael Ellerman
2012-02-16 19:28 ` Avi Kivity
2012-02-16 19:28 ` Avi Kivity
2012-02-17 0:09 ` Michael Ellerman
2012-02-17 0:09 ` [Qemu-devel] " Michael Ellerman
2012-02-17 0:09 ` Michael Ellerman
2012-02-18 10:03 ` Avi Kivity
2012-02-18 10:03 ` [Qemu-devel] " Avi Kivity
2012-02-18 10:03 ` Avi Kivity
2012-02-16 10:26 ` Avi Kivity
2012-02-16 10:26 ` [Qemu-devel] " Avi Kivity
2012-02-16 10:26 ` Avi Kivity
2012-02-07 12:28 ` Anthony Liguori
2012-02-07 12:28 ` Anthony Liguori
2012-02-07 12:40 ` Avi Kivity
2012-02-07 12:40 ` Avi Kivity
2012-02-07 12:51 ` Anthony Liguori
2012-02-07 12:51 ` Anthony Liguori
2012-02-07 13:18 ` Avi Kivity
2012-02-07 13:18 ` [Qemu-devel] " Avi Kivity
2012-02-07 13:18 ` Avi Kivity
2012-02-07 15:15 ` Anthony Liguori
2012-02-07 15:15 ` Anthony Liguori
2012-02-07 18:28 ` Chris Wright
2012-02-07 18:28 ` Chris Wright
2012-02-08 17:02 ` Scott Wood
2012-02-08 17:02 ` Scott Wood
2012-02-08 17:12 ` Alan Cox
2012-02-08 17:12 ` [Qemu-devel] " Alan Cox
2012-02-08 17:12 ` Alan Cox
2012-02-05 9:37 ` Gleb Natapov
2012-02-05 9:37 ` [Qemu-devel] " Gleb Natapov
2012-02-05 9:37 ` Gleb Natapov
2012-02-05 9:44 ` Avi Kivity
2012-02-05 9:44 ` [Qemu-devel] " Avi Kivity
2012-02-05 9:44 ` Avi Kivity
2012-02-05 9:51 ` Gleb Natapov
2012-02-05 9:51 ` [Qemu-devel] " Gleb Natapov
2012-02-05 9:51 ` Gleb Natapov
2012-02-05 9:56 ` Avi Kivity
2012-02-05 9:56 ` [Qemu-devel] " Avi Kivity
2012-02-05 9:56 ` Avi Kivity
2012-02-05 10:58 ` Gleb Natapov
2012-02-05 10:58 ` [Qemu-devel] " Gleb Natapov
2012-02-05 10:58 ` Gleb Natapov
2012-02-05 13:16 ` Avi Kivity
2012-02-05 13:16 ` [Qemu-devel] " Avi Kivity
2012-02-05 13:16 ` Avi Kivity
2012-02-05 16:36 ` Anthony Liguori
2012-02-05 16:36 ` [Qemu-devel] " Anthony Liguori
2012-02-05 16:36 ` Anthony Liguori
2012-02-06 9:34 ` Avi Kivity
2012-02-06 9:34 ` [Qemu-devel] " Avi Kivity
2012-02-06 9:34 ` Avi Kivity
2012-02-06 13:33 ` Anthony Liguori
2012-02-06 13:33 ` Anthony Liguori
2012-02-06 13:54 ` Avi Kivity
2012-02-06 13:54 ` Avi Kivity
2012-02-06 14:00 ` Anthony Liguori
2012-02-06 14:00 ` Anthony Liguori
2012-02-06 14:08 ` Avi Kivity
2012-02-06 14:08 ` Avi Kivity
2012-02-07 18:12 ` Rusty Russell
2012-02-07 18:12 ` [Qemu-devel] " Rusty Russell
2012-02-07 18:12 ` Rusty Russell
2012-02-15 13:39 ` Avi Kivity
2012-02-15 13:39 ` Avi Kivity
2012-02-15 21:59 ` Anthony Liguori
2012-02-15 21:59 ` Anthony Liguori
2012-02-16 8:57 ` Gleb Natapov
2012-02-16 8:57 ` [Qemu-devel] " Gleb Natapov
2012-02-16 8:57 ` Gleb Natapov
2012-02-16 14:46 ` Anthony Liguori
2012-02-16 14:46 ` Anthony Liguori
2012-02-16 19:34 ` Avi Kivity
2012-02-16 19:34 ` [Qemu-devel] " Avi Kivity
2012-02-16 19:34 ` Avi Kivity
2012-02-15 23:08 ` Rusty Russell
2012-02-15 23:08 ` [Qemu-devel] " Rusty Russell
2012-02-15 23:08 ` Rusty Russell
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