On Fri, Nov 16, 2012 at 8:03 AM, Richard Henderson wrote:
> On 2012-11-14 23:47, liu ping fan wrote:
>> Probably I made a mistake here, in vhost, log =
>> __sync_fetch_and_and(from, 0) is used to fetch 64bits atomically in
>> the case 32bits qemu running on 64bits linux. Right? But how can
>
On Sun, Nov 18, 2012 at 6:04 PM, Avi Kivity wrote:
> On 11/15/2012 09:47 AM, liu ping fan wrote:
>> On Wed, Nov 14, 2012 at 5:47 PM, Paolo Bonzini wrote:
>>> Il 14/11/2012 10:38, liu ping fan ha scritto:
On Tue, Nov 13, 2012 at 6:11 PM, Paolo Bonzini wrote:
>>> Il 05/11/2012 06:38, Liu
On 11/15/2012 09:47 AM, liu ping fan wrote:
> On Wed, Nov 14, 2012 at 5:47 PM, Paolo Bonzini wrote:
>> Il 14/11/2012 10:38, liu ping fan ha scritto:
>>> On Tue, Nov 13, 2012 at 6:11 PM, Paolo Bonzini wrote:
>> Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
>>> From: Liu Ping Fan
>>>
>
On 2012-11-14 23:47, liu ping fan wrote:
> Probably I made a mistake here, in vhost, log =
> __sync_fetch_and_and(from, 0) is used to fetch 64bits atomically in
> the case 32bits qemu running on 64bits linux. Right? But how can
> we read 32bits twice in atomic? Seem that no instruction like
Il 15/11/2012 08:47, liu ping fan ha scritto:
RCU prototype required pointer-sized access, which you cannot make type-
>>> But I think that your RCU prototype should rely on atomic of CPU, not
>>> gcc‘s atomic.
>>
>> What's the difference? gcc's atomic produces the same instructions as
>> han
On Wed, Nov 14, 2012 at 5:47 PM, Paolo Bonzini wrote:
> Il 14/11/2012 10:38, liu ping fan ha scritto:
>> On Tue, Nov 13, 2012 at 6:11 PM, Paolo Bonzini wrote:
> Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
>> From: Liu Ping Fan
>>
>> If out of global lock, we will be challenged
Il 14/11/2012 10:38, liu ping fan ha scritto:
> On Tue, Nov 13, 2012 at 6:11 PM, Paolo Bonzini wrote:
Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
> From: Liu Ping Fan
>
> If out of global lock, we will be challenged by SMP in low level,
> so need atomic ops.
>
> Thi
On Tue, Nov 13, 2012 at 6:11 PM, Paolo Bonzini wrote:
>> > Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
>> > > From: Liu Ping Fan
>> > >
>> > > If out of global lock, we will be challenged by SMP in low level,
>> > > so need atomic ops.
>> > >
>> > > This file is a wrapper of GCC atomic builtin.
> > Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
> > > From: Liu Ping Fan
> > >
> > > If out of global lock, we will be challenged by SMP in low level,
> > > so need atomic ops.
> > >
> > > This file is a wrapper of GCC atomic builtin.
> >
> > I still object to this.
> >
> > I know it enforces ty
> > Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
> > > From: Liu Ping Fan
> > >
> > > If out of global lock, we will be challenged by SMP in low level,
> > > so need atomic ops.
> > >
> > > This file is a wrapper of GCC atomic builtin.
> >
> > I still object to this.
> >
> > I know it enforces ty
On Mon, Nov 12, 2012 at 5:54 PM, Paolo Bonzini wrote:
> Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
>> From: Liu Ping Fan
>>
>> If out of global lock, we will be challenged by SMP in low level,
>> so need atomic ops.
>>
>> This file is a wrapper of GCC atomic builtin.
>
> I still object to this
Il 05/11/2012 06:38, Liu Ping Fan ha scritto:
> From: Liu Ping Fan
>
> If out of global lock, we will be challenged by SMP in low level,
> so need atomic ops.
>
> This file is a wrapper of GCC atomic builtin.
I still object to this.
I know it enforces type-safety, but it is incomplete. It doe
From: Liu Ping Fan
If out of global lock, we will be challenged by SMP in low level,
so need atomic ops.
This file is a wrapper of GCC atomic builtin.
Signed-off-by: Liu Ping Fan
---
include/qemu/atomic.h | 63 +
1 files changed, 63 insertions
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