* [PATCH] KVM: VMX: re-add ple_gap module parameter
@ 2018-11-23 17:02 Luiz Capitulino
2018-11-23 17:42 ` Liran Alon
0 siblings, 1 reply; 7+ messages in thread
From: Luiz Capitulino @ 2018-11-23 17:02 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: babu.moger, kvm, linux-kernel
Apparently, the ple_gap parameter was accidentally removed
by commit c8e88717cfc6b36bedea22368d97667446318291. Add it
back.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---
arch/x86/kvm/vmx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 4555077d69ce..be6f13f1c25f 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -174,6 +174,7 @@ module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO);
* refer SDM volume 3b section 21.6.13 & 22.1.3.
*/
static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
+module_param(ple_gap, uint, 0444);
static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
module_param(ple_window, uint, 0444);
--
2.17.2
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH] KVM: VMX: re-add ple_gap module parameter
2018-11-23 17:02 [PATCH] KVM: VMX: re-add ple_gap module parameter Luiz Capitulino
@ 2018-11-23 17:42 ` Liran Alon
2018-11-23 18:26 ` Luiz Capitulino
0 siblings, 1 reply; 7+ messages in thread
From: Liran Alon @ 2018-11-23 17:42 UTC (permalink / raw)
To: Luiz Capitulino; +Cc: Paolo Bonzini, babu.moger, kvm, linux-kernel
> On 23 Nov 2018, at 19:02, Luiz Capitulino <lcapitulino@redhat.com> wrote:
>
>
> Apparently, the ple_gap parameter was accidentally removed
> by commit c8e88717cfc6b36bedea22368d97667446318291. Add it
> back.
>
> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Weird that nobody noticed this when patch was applied… Thanks.
Reviewed-by: Liran Alon <liran.alon@oracle.com>
> ---
> arch/x86/kvm/vmx.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 4555077d69ce..be6f13f1c25f 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -174,6 +174,7 @@ module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO);
> * refer SDM volume 3b section 21.6.13 & 22.1.3.
> */
> static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
> +module_param(ple_gap, uint, 0444);
>
> static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
> module_param(ple_window, uint, 0444);
> --
> 2.17.2
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] KVM: VMX: re-add ple_gap module parameter
2018-11-23 17:42 ` Liran Alon
@ 2018-11-23 18:26 ` Luiz Capitulino
2018-11-28 15:57 ` Moger, Babu
0 siblings, 1 reply; 7+ messages in thread
From: Luiz Capitulino @ 2018-11-23 18:26 UTC (permalink / raw)
To: Liran Alon; +Cc: Paolo Bonzini, babu.moger, kvm, linux-kernel
On Fri, 23 Nov 2018 19:42:53 +0200
Liran Alon <liran.alon@oracle.com> wrote:
> > On 23 Nov 2018, at 19:02, Luiz Capitulino <lcapitulino@redhat.com> wrote:
> >
> >
> > Apparently, the ple_gap parameter was accidentally removed
> > by commit c8e88717cfc6b36bedea22368d97667446318291. Add it
> > back.
> >
> > Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
>
> Weird that nobody noticed this when patch was applied… Thanks.
> Reviewed-by: Liran Alon <liran.alon@oracle.com>
I forgot to mention that I noticed this because I have systems
disabling ple with ple_gap=0 in modprobe.conf. In those systems
kvm_intel won't load anymore.
>
> > ---
> > arch/x86/kvm/vmx.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> > index 4555077d69ce..be6f13f1c25f 100644
> > --- a/arch/x86/kvm/vmx.c
> > +++ b/arch/x86/kvm/vmx.c
> > @@ -174,6 +174,7 @@ module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO);
> > * refer SDM volume 3b section 21.6.13 & 22.1.3.
> > */
> > static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
> > +module_param(ple_gap, uint, 0444);
> >
> > static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
> > module_param(ple_window, uint, 0444);
> > --
> > 2.17.2
> >
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* RE: [PATCH] KVM: VMX: re-add ple_gap module parameter
2018-11-23 18:26 ` Luiz Capitulino
@ 2018-11-28 15:57 ` Moger, Babu
2018-11-28 16:03 ` Luiz Capitulino
2018-11-28 16:11 ` Sasha Levin
0 siblings, 2 replies; 7+ messages in thread
From: Moger, Babu @ 2018-11-28 15:57 UTC (permalink / raw)
To: Luiz Capitulino, Liran Alon; +Cc: Paolo Bonzini, kvm, linux-kernel, stable
My bad.. Sorry about this. I think this should also go to
stable@vger.kernel.org
> -----Original Message-----
> From: Luiz Capitulino <lcapitulino@redhat.com>
> Sent: Friday, November 23, 2018 12:27 PM
> To: Liran Alon <liran.alon@oracle.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>; Moger, Babu
> <Babu.Moger@amd.com>; kvm@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: Re: [PATCH] KVM: VMX: re-add ple_gap module parameter
>
> On Fri, 23 Nov 2018 19:42:53 +0200
> Liran Alon <liran.alon@oracle.com> wrote:
>
> > > On 23 Nov 2018, at 19:02, Luiz Capitulino <lcapitulino@redhat.com>
> wrote:
> > >
> > >
> > > Apparently, the ple_gap parameter was accidentally removed
> > > by commit c8e88717cfc6b36bedea22368d97667446318291. Add it
> > > back.
> > >
> > > Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
> >
> > Weird that nobody noticed this when patch was applied… Thanks.
> > Reviewed-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Babu Moger <babu.moger@amd.com>
>
> I forgot to mention that I noticed this because I have systems
> disabling ple with ple_gap=0 in modprobe.conf. In those systems
> kvm_intel won't load anymore.
>
> >
> > > ---
> > > arch/x86/kvm/vmx.c | 1 +
> > > 1 file changed, 1 insertion(+)
> > >
> > > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> > > index 4555077d69ce..be6f13f1c25f 100644
> > > --- a/arch/x86/kvm/vmx.c
> > > +++ b/arch/x86/kvm/vmx.c
> > > @@ -174,6 +174,7 @@ module_param_named(preemption_timer,
> enable_preemption_timer, bool, S_IRUGO);
> > > * refer SDM volume 3b section 21.6.13 & 22.1.3.
> > > */
> > > static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
> > > +module_param(ple_gap, uint, 0444);
> > >
> > > static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
> > > module_param(ple_window, uint, 0444);
> > > --
> > > 2.17.2
> > >
> >
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] KVM: VMX: re-add ple_gap module parameter
2018-11-28 15:57 ` Moger, Babu
@ 2018-11-28 16:03 ` Luiz Capitulino
2018-11-28 16:11 ` Sasha Levin
1 sibling, 0 replies; 7+ messages in thread
From: Luiz Capitulino @ 2018-11-28 16:03 UTC (permalink / raw)
To: Moger, Babu; +Cc: Liran Alon, Paolo Bonzini, kvm, linux-kernel, stable
On Wed, 28 Nov 2018 15:57:53 +0000
"Moger, Babu" <Babu.Moger@amd.com> wrote:
> My bad.. Sorry about this. I think this should also go to
> stable@vger.kernel.org
No problem man, this happens. Thanks for the review!
>
> > -----Original Message-----
> > From: Luiz Capitulino <lcapitulino@redhat.com>
> > Sent: Friday, November 23, 2018 12:27 PM
> > To: Liran Alon <liran.alon@oracle.com>
> > Cc: Paolo Bonzini <pbonzini@redhat.com>; Moger, Babu
> > <Babu.Moger@amd.com>; kvm@vger.kernel.org; linux-
> > kernel@vger.kernel.org
> > Subject: Re: [PATCH] KVM: VMX: re-add ple_gap module parameter
> >
> > On Fri, 23 Nov 2018 19:42:53 +0200
> > Liran Alon <liran.alon@oracle.com> wrote:
> >
> > > > On 23 Nov 2018, at 19:02, Luiz Capitulino <lcapitulino@redhat.com>
> > wrote:
> > > >
> > > >
> > > > Apparently, the ple_gap parameter was accidentally removed
> > > > by commit c8e88717cfc6b36bedea22368d97667446318291. Add it
> > > > back.
> > > >
> > > > Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
> > >
> > > Weird that nobody noticed this when patch was applied… Thanks.
> > > Reviewed-by: Liran Alon <liran.alon@oracle.com>
> Reviewed-by: Babu Moger <babu.moger@amd.com>
>
> >
> > I forgot to mention that I noticed this because I have systems
> > disabling ple with ple_gap=0 in modprobe.conf. In those systems
> > kvm_intel won't load anymore.
> >
> > >
> > > > ---
> > > > arch/x86/kvm/vmx.c | 1 +
> > > > 1 file changed, 1 insertion(+)
> > > >
> > > > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> > > > index 4555077d69ce..be6f13f1c25f 100644
> > > > --- a/arch/x86/kvm/vmx.c
> > > > +++ b/arch/x86/kvm/vmx.c
> > > > @@ -174,6 +174,7 @@ module_param_named(preemption_timer,
> > enable_preemption_timer, bool, S_IRUGO);
> > > > * refer SDM volume 3b section 21.6.13 & 22.1.3.
> > > > */
> > > > static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
> > > > +module_param(ple_gap, uint, 0444);
> > > >
> > > > static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
> > > > module_param(ple_window, uint, 0444);
> > > > --
> > > > 2.17.2
> > > >
> > >
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] KVM: VMX: re-add ple_gap module parameter
2018-11-28 15:57 ` Moger, Babu
2018-11-28 16:03 ` Luiz Capitulino
@ 2018-11-28 16:11 ` Sasha Levin
2018-11-28 16:40 ` Paolo Bonzini
1 sibling, 1 reply; 7+ messages in thread
From: Sasha Levin @ 2018-11-28 16:11 UTC (permalink / raw)
To: Moger, Babu
Cc: Luiz Capitulino, Liran Alon, Paolo Bonzini, kvm, linux-kernel, stable
On Wed, Nov 28, 2018 at 03:57:53PM +0000, Moger, Babu wrote:
>My bad.. Sorry about this. I think this should also go to
>stable@vger.kernel.org
Please actually add the stable tag in the commit message if you intend
for this patch to go in stable.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] KVM: VMX: re-add ple_gap module parameter
2018-11-28 16:11 ` Sasha Levin
@ 2018-11-28 16:40 ` Paolo Bonzini
0 siblings, 0 replies; 7+ messages in thread
From: Paolo Bonzini @ 2018-11-28 16:40 UTC (permalink / raw)
To: Sasha Levin, Moger, Babu
Cc: Luiz Capitulino, Liran Alon, kvm, linux-kernel, stable
On 28/11/18 17:11, Sasha Levin wrote:
> On Wed, Nov 28, 2018 at 03:57:53PM +0000, Moger, Babu wrote:
>> My bad.. Sorry about this. I think this should also go to
>> stable@vger.kernel.org
>
> Please actually add the stable tag in the commit message if you intend
> for this patch to go in stable.
No worries, the patch is already on its way to Linus with the stable tag.
Paolo
^ permalink raw reply [flat|nested] 7+ messages in thread
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2018-11-23 17:02 [PATCH] KVM: VMX: re-add ple_gap module parameter Luiz Capitulino
2018-11-23 17:42 ` Liran Alon
2018-11-23 18:26 ` Luiz Capitulino
2018-11-28 15:57 ` Moger, Babu
2018-11-28 16:03 ` Luiz Capitulino
2018-11-28 16:11 ` Sasha Levin
2018-11-28 16:40 ` Paolo Bonzini
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