on: shall we add PASID as one parameter to make iommu
know which address space to visit?
For live migration, the pasid should not be necessary. But considering
future extension, it may be required.
BRs,
Yi Sun
On 21-03-16 19:39:47, Keqian Zhu wrote:
> Hi Yi,
>
> On 2021/3/16 17:17, Yi Sun wrote:
> > On 21-03-10 17:06:07, Keqian Zhu wrote:
> >> From: jiangkunkun
> >>
> >> Block descriptor is not a proper granule for dirty log tracking.
> >> Take a
into one, e.g:
int iommu_domain_set_hwdbm(struct iommu_domain *domain, bool enable,
unsigned long iova, size_t size,
int prot);
Same comments to patch 5.
BRs,
Yi Sun
> --
> 2.19.1
On 21-02-09 11:16:08, Robin Murphy wrote:
> On 2021-02-07 09:56, Yi Sun wrote:
> >Hi,
> >
> >On 21-01-28 23:17:41, Keqian Zhu wrote:
> >
> >[...]
> >
> >>+static void vfio_dma_dirty_log_start(struct vfio_iommu *iommu,
> >>+
On 21-02-07 18:40:36, Keqian Zhu wrote:
> Hi Yi,
>
> On 2021/2/7 17:56, Yi Sun wrote:
> > Hi,
> >
> > On 21-01-28 23:17:41, Keqian Zhu wrote:
> >
> > [...]
> >
> >> +static void vfio_dma_dirty_log_start(struct vfio_iommu *iommu,
>
Hi,
On 21-01-28 23:17:41, Keqian Zhu wrote:
[...]
> +static void vfio_dma_dirty_log_start(struct vfio_iommu *iommu,
> + struct vfio_dma *dma)
> +{
> + struct vfio_domain *d;
> +
> + list_for_each_entry(d, >domain_list, next) {
> + /* Go
From: "Liu, Yi L"
In prq_event_thread(), the QI_PGRP_PDP is wrongly set by
'req->pasid_present' which should be replaced to
'req->priv_data_present'.
Fixes: 5b438f4ba315 ("iommu/vt-d: Support page request in scalable mode")
Signed-off-by: Liu, Yi L
Signed-off-by:
From: Liu Yi L
Should get correct sid and set it into sdev. Because we execute
'sdev->sid != req->rid' in the loop of prq_event_thread().
Fixes: eb8d93ea3c1d ("iommu/vt-d: Report page request faults for guest SVA")
Signed-off-by: Liu Yi L
Signed-off-by: Yi Sun
---
drivers/i
We found a few issues about PRQ. So, two patches are cooked to
fix them. Please have a review. Thanks!
Changes from v1:
- Modify subject of patch 1 to make it more accurate.
- Move get_domain_info() up to the sanity check part in patch 1.
- Remove v1 patch 2 which is not
On 20-10-28 10:13:56, Jean-Philippe Brucker wrote:
> Hi,
>
> On Wed, Oct 28, 2020 at 09:36:57AM +0800, Yi Sun wrote:
> > From: Jacob Pan
> >
> > original code fails when LAST_PAGE is set in flags.
>
> LAST_PAGE is not documented to be a valid flags for
44
> --- a/arch/x86/hyperv/hv_spinlock.c
> +++ b/arch/x86/hyperv/hv_spinlock.c
> @@ -56,7 +56,7 @@ static void hv_qlock_wait(u8 *byte, u8 val)
> /*
> * Hyper-V does not support this so far.
> */
> -bool hv_vcpu_is_preempted(int vcpu)
> +__visible bool hv_vcpu_is_
On 18-11-01 08:59:08, Waiman Long wrote:
> On 10/31/2018 11:20 PM, Yi Sun wrote:
> > On 18-10-31 18:15:39, Peter Zijlstra wrote:
> >> On Wed, Oct 31, 2018 at 11:07:22AM -0400, Waiman Long wrote:
> >>> On 10/31/2018 10:10 AM, Peter Zijlstra wrote:
> >>>>
On 18-11-01 08:59:08, Waiman Long wrote:
> On 10/31/2018 11:20 PM, Yi Sun wrote:
> > On 18-10-31 18:15:39, Peter Zijlstra wrote:
> >> On Wed, Oct 31, 2018 at 11:07:22AM -0400, Waiman Long wrote:
> >>> On 10/31/2018 10:10 AM, Peter Zijlstra wrote:
> >>>>
On 18-10-31 18:15:39, Peter Zijlstra wrote:
> On Wed, Oct 31, 2018 at 11:07:22AM -0400, Waiman Long wrote:
> > On 10/31/2018 10:10 AM, Peter Zijlstra wrote:
> > > On Wed, Oct 31, 2018 at 09:54:17AM +0800, Yi Sun wrote:
> > >> On 18-10-23 17:33:28, Yi Sun wrote:
>
On 18-10-31 18:15:39, Peter Zijlstra wrote:
> On Wed, Oct 31, 2018 at 11:07:22AM -0400, Waiman Long wrote:
> > On 10/31/2018 10:10 AM, Peter Zijlstra wrote:
> > > On Wed, Oct 31, 2018 at 09:54:17AM +0800, Yi Sun wrote:
> > >> On 18-10-23 17:33:28, Yi Sun wrote:
>
After syncing with Hyper-V team, we have got answers as below.
On 18-10-24 16:53:00, Michael Kelley wrote:
> From: Yi Sun Sent: Friday, October 19, 2018 6:14
> AM
> >
> > The HvNotifyLongSpinWait hypercall (HVCALL_NOTIFY_LONG_SPIN_WAIT)
> > is used by a guest OS
After syncing with Hyper-V team, we have got answers as below.
On 18-10-24 16:53:00, Michael Kelley wrote:
> From: Yi Sun Sent: Friday, October 19, 2018 6:14
> AM
> >
> > The HvNotifyLongSpinWait hypercall (HVCALL_NOTIFY_LONG_SPIN_WAIT)
> > is used by a guest OS
On 18-10-23 17:33:28, Yi Sun wrote:
> On 18-10-23 10:51:27, Peter Zijlstra wrote:
> > On Tue, Oct 23, 2018 at 10:57:40AM +0800, Yi Sun wrote:
> > > On 18-10-22 19:15:16, Peter Zijlstra wrote:
> >
> > > > > >>>> +#if defined(CONFIG_X86_64) &
On 18-10-23 17:33:28, Yi Sun wrote:
> On 18-10-23 10:51:27, Peter Zijlstra wrote:
> > On Tue, Oct 23, 2018 at 10:57:40AM +0800, Yi Sun wrote:
> > > On 18-10-22 19:15:16, Peter Zijlstra wrote:
> >
> > > > > >>>> +#if defined(CONFIG_X86_64) &
Hi, Michael,
Thanks a lot for the review and comments! Let us sync with Hyper-V team
to confirm these suspicious points.
BRs,
Sun Yi
On 18-10-24 16:53:00, Michael Kelley wrote:
> From: Yi Sun Sent: Friday, October 19, 2018 6:14
> AM
> >
> > The HvNotifyLong
Hi, Michael,
Thanks a lot for the review and comments! Let us sync with Hyper-V team
to confirm these suspicious points.
BRs,
Sun Yi
On 18-10-24 16:53:00, Michael Kelley wrote:
> From: Yi Sun Sent: Friday, October 19, 2018 6:14
> AM
> >
> > The HvNotifyLong
On 18-10-23 10:51:27, Peter Zijlstra wrote:
> On Tue, Oct 23, 2018 at 10:57:40AM +0800, Yi Sun wrote:
> > On 18-10-22 19:15:16, Peter Zijlstra wrote:
>
> > > > >>>> +#if defined(CONFIG_X86_64) && defined(CONFIG_PARAVIRT_SPINLOCK
On 18-10-23 10:51:27, Peter Zijlstra wrote:
> On Tue, Oct 23, 2018 at 10:57:40AM +0800, Yi Sun wrote:
> > On 18-10-22 19:15:16, Peter Zijlstra wrote:
>
> > > > >>>> +#if defined(CONFIG_X86_64) && defined(CONFIG_PARAVIRT_SPINLOCK
8 at 12:31:45PM -0400, Waiman Long wrote:
> > On 10/22/2018 03:32 AM, Juergen Gross wrote:
> > > On 22/10/2018 03:53, Yi Sun wrote:
> > >> On 18-10-19 16:20:52, Juergen Gross wrote:
> > >>> On 19/10/2018 15:13, Yi Sun wrote:
> > >> [...]
> &g
8 at 12:31:45PM -0400, Waiman Long wrote:
> > On 10/22/2018 03:32 AM, Juergen Gross wrote:
> > > On 22/10/2018 03:53, Yi Sun wrote:
> > >> On 18-10-19 16:20:52, Juergen Gross wrote:
> > >>> On 19/10/2018 15:13, Yi Sun wrote:
> > >> [...]
> &g
On 18-10-19 16:20:52, Juergen Gross wrote:
> On 19/10/2018 15:13, Yi Sun wrote:
[...]
> > diff --git a/kernel/locking/qspinlock_paravirt.h
> > b/kernel/locking/qspinlock_paravirt.h
> > index 0130e48..9e88c7e 100644
> > --- a/kernel/locking/qspinlock_paravirt
On 18-10-19 16:20:52, Juergen Gross wrote:
> On 19/10/2018 15:13, Yi Sun wrote:
[...]
> > diff --git a/kernel/locking/qspinlock_paravirt.h
> > b/kernel/locking/qspinlock_paravirt.h
> > index 0130e48..9e88c7e 100644
> > --- a/kernel/locking/qspinlock_paravirt
EBX of Implementation Recommendations MSR (0x4004) indicates
recommended number of attempts to retry a spinlock failure before
notifying the hypervisor about the failures.
0x indicates never to retry.
Signed-off-by: Yi Sun
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
C
improves the scalability of
VMs with more than one virtual processor on Hyper-V.
Per MSFT TLFS, the retry number (SpinWaitInfo) is sent to hypervisor
only when the retry number exceeds the recommended number. If
recommended number is 0x, never retry.
Signed-off-by: Yi Sun
Cc: "K. Y. Srini
).
This patch set bases on latest tip branch because below
patch set has not been merged into main branch.
[PATCH v4 0/2] Enable PV qspinlock for Hyper-V
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Cc: Juergen Gross
EBX of Implementation Recommendations MSR (0x4004) indicates
recommended number of attempts to retry a spinlock failure before
notifying the hypervisor about the failures.
0x indicates never to retry.
Signed-off-by: Yi Sun
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
C
improves the scalability of
VMs with more than one virtual processor on Hyper-V.
Per MSFT TLFS, the retry number (SpinWaitInfo) is sent to hypervisor
only when the retry number exceeds the recommended number. If
recommended number is 0x, never retry.
Signed-off-by: Yi Sun
Cc: "K. Y. Srini
).
This patch set bases on latest tip branch because below
patch set has not been merged into main branch.
[PATCH v4 0/2] Enable PV qspinlock for Hyper-V
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Cc: Juergen Gross
On 18-10-10 07:50:26, Ingo Molnar wrote:
>
> * Yi Sun wrote:
>
> > On 18-10-09 12:54:27, Ingo Molnar wrote:
> > >
> > > * Yi Sun wrote:
> > >
> > > > Follow PV spinlock mechanism to implement the callback functions
> > &
On 18-10-10 07:50:26, Ingo Molnar wrote:
>
> * Yi Sun wrote:
>
> > On 18-10-09 12:54:27, Ingo Molnar wrote:
> > >
> > > * Yi Sun wrote:
> > >
> > > > Follow PV spinlock mechanism to implement the callback functions
> > &
On 18-10-09 12:54:27, Ingo Molnar wrote:
>
> * Yi Sun wrote:
>
> > Follow PV spinlock mechanism to implement the callback functions
> > to allow the CPU idling and kicking operations on Hyper-V.
>
> > +#if defined(CONFIG_SMP)
> > + smp_ops.smp_prepar
On 18-10-09 12:54:27, Ingo Molnar wrote:
>
> * Yi Sun wrote:
>
> > Follow PV spinlock mechanism to implement the callback functions
> > to allow the CPU idling and kicking operations on Hyper-V.
>
> > +#if defined(CONFIG_SMP)
> > + smp_ops.smp_prepar
Commit-ID: 3a025de64bf89c84a79909069e3c24ad9e710d27
Gitweb: https://git.kernel.org/tip/3a025de64bf89c84a79909069e3c24ad9e710d27
Author: Yi Sun
AuthorDate: Mon, 8 Oct 2018 16:29:34 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 9 Oct 2018 14:21:39 +0200
x86/hyperv: Enable PV
Commit-ID: 3a025de64bf89c84a79909069e3c24ad9e710d27
Gitweb: https://git.kernel.org/tip/3a025de64bf89c84a79909069e3c24ad9e710d27
Author: Yi Sun
AuthorDate: Mon, 8 Oct 2018 16:29:34 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 9 Oct 2018 14:21:39 +0200
x86/hyperv: Enable PV
Commit-ID: f726c4620df39055f060537a8ed183c18a2c504b
Gitweb: https://git.kernel.org/tip/f726c4620df39055f060537a8ed183c18a2c504b
Author: Yi Sun
AuthorDate: Thu, 27 Sep 2018 14:01:43 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 9 Oct 2018 14:14:49 +0200
x86/hyperv: Add
Commit-ID: f726c4620df39055f060537a8ed183c18a2c504b
Gitweb: https://git.kernel.org/tip/f726c4620df39055f060537a8ed183c18a2c504b
Author: Yi Sun
AuthorDate: Thu, 27 Sep 2018 14:01:43 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 9 Oct 2018 14:14:49 +0200
x86/hyperv: Add
Commit-ID: b36bcb7ce0b353bd4889e06b61e036744b02ca51
Gitweb: https://git.kernel.org/tip/b36bcb7ce0b353bd4889e06b61e036744b02ca51
Author: Yi Sun
AuthorDate: Mon, 8 Oct 2018 16:29:34 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 9 Oct 2018 11:26:31 +0200
x86/hyperv: Enable PV
Commit-ID: b36bcb7ce0b353bd4889e06b61e036744b02ca51
Gitweb: https://git.kernel.org/tip/b36bcb7ce0b353bd4889e06b61e036744b02ca51
Author: Yi Sun
AuthorDate: Mon, 8 Oct 2018 16:29:34 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 9 Oct 2018 11:26:31 +0200
x86/hyperv: Enable PV
Hemminger
Signed-off-by: Yi Sun
Reviewed-by: Michael Kelley
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index 00e01d2..4139f76 100644
--- a/arch/x86/include/asm/hyperv-tl
Follow PV spinlock mechanism to implement the callback functions
to allow the CPU idling and kicking operations on Hyper-V.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Cc: Juergen Gross
Signed-off-by: Yi Sun
Hemminger
Signed-off-by: Yi Sun
Reviewed-by: Michael Kelley
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index 00e01d2..4139f76 100644
--- a/arch/x86/include/asm/hyperv-tl
Follow PV spinlock mechanism to implement the callback functions
to allow the CPU idling and kicking operations on Hyper-V.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Cc: Juergen Gross
Signed-off-by: Yi Sun
ce so far.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Jonathan Corbet
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Cc: Juergen Gross
Yi Sun (2):
X86/Hyper-V: Add Guest IDLE MSR support
locking/pvqspinlock, hv: Enable PV qspinlock for Hyper-V
Doc
ce so far.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Jonathan Corbet
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Cc: Juergen Gross
Yi Sun (2):
X86/Hyper-V: Add Guest IDLE MSR support
locking/pvqspinlock, hv: Enable PV qspinlock for Hyper-V
Doc
dmsr result in a hang?
>
> I believe the correct way would be to:
>
> - disable interrupts before above READ_ONCE() and restore them
> after the rdmsrl()
>
> - return early if in_nmi()
>
> similar as the kvm specific variant is doing it.
>
>
> Juergen
Thank you for the suggestion! That is a possible case. I will submit
a new version in soon.
BRs,
Yi Sun
dmsr result in a hang?
>
> I believe the correct way would be to:
>
> - disable interrupts before above READ_ONCE() and restore them
> after the rdmsrl()
>
> - return early if in_nmi()
>
> similar as the kvm specific variant is doing it.
>
>
> Juergen
Thank you for the suggestion! That is a possible case. I will submit
a new version in soon.
BRs,
Yi Sun
Commit-ID: 10d02e13385ce1e90abb49ef1e9a366a5d968157
Gitweb: https://git.kernel.org/tip/10d02e13385ce1e90abb49ef1e9a366a5d968157
Author: Yi Sun
AuthorDate: Thu, 27 Sep 2018 14:01:43 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 2 Oct 2018 13:21:52 +0200
x86/hyperv: Add
Commit-ID: 10d02e13385ce1e90abb49ef1e9a366a5d968157
Gitweb: https://git.kernel.org/tip/10d02e13385ce1e90abb49ef1e9a366a5d968157
Author: Yi Sun
AuthorDate: Thu, 27 Sep 2018 14:01:43 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 2 Oct 2018 13:21:52 +0200
x86/hyperv: Add
Commit-ID: aaa7fc34c003bd8133a49f7634480cef6288ad55
Gitweb: https://git.kernel.org/tip/aaa7fc34c003bd8133a49f7634480cef6288ad55
Author: Yi Sun
AuthorDate: Thu, 27 Sep 2018 14:01:44 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 2 Oct 2018 13:22:06 +0200
x86/hyperv: Enable PV
Commit-ID: aaa7fc34c003bd8133a49f7634480cef6288ad55
Gitweb: https://git.kernel.org/tip/aaa7fc34c003bd8133a49f7634480cef6288ad55
Author: Yi Sun
AuthorDate: Thu, 27 Sep 2018 14:01:44 +0800
Committer: Thomas Gleixner
CommitDate: Tue, 2 Oct 2018 13:22:06 +0200
x86/hyperv: Enable PV
Follow PV spinlock mechanism to implement the callback functions
to allow the CPU idling and kicking operations on Hyper-V.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Signed-off-by: Yi Sun
---
v2->v3:
-
Follow PV spinlock mechanism to implement the callback functions
to allow the CPU idling and kicking operations on Hyper-V.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Signed-off-by: Yi Sun
---
v2->v3:
-
Hemminger
Reviewed-by: Michael Kelley
Signed-off-by: Yi Sun
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index 00e01d2..4139f76 100644
--- a/arch/x86/include/asm/hyperv-tl
use Hyper-V does not provide such interface so far.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Jonathan Corbet
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Yi Sun (2):
X86/Hyper-V: Add Guest IDLE MSR support
locking/pvqspinlock, hv: Enable PV qspinlock for Hyp
Hemminger
Reviewed-by: Michael Kelley
Signed-off-by: Yi Sun
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index 00e01d2..4139f76 100644
--- a/arch/x86/include/asm/hyperv-tl
use Hyper-V does not provide such interface so far.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Jonathan Corbet
Cc: Thomas Gleixner
Cc: Michael Kelley (EOSG)
Yi Sun (2):
X86/Hyper-V: Add Guest IDLE MSR support
locking/pvqspinlock, hv: Enable PV qspinlock for Hyp
On 18-09-21 17:02:54, Michael Kelley (EOSG) wrote:
> From: Yi Sun Sent: Friday, September 21, 2018
> 12:25 AM
> > +
> > +#define pr_fmt(fmt) "hv: " fmt
>
> Other Hyper-V messages use "Hyper-V: " as the prefix, not "hv: ". Take
> a q
On 18-09-21 17:02:54, Michael Kelley (EOSG) wrote:
> From: Yi Sun Sent: Friday, September 21, 2018
> 12:25 AM
> > +
> > +#define pr_fmt(fmt) "hv: " fmt
>
> Other Hyper-V messages use "Hyper-V: " as the prefix, not "hv: ". Take
> a q
cpu exit idle state.
In vcpu_is_preempted callback function, return false directly
because Hyper-V does not provide such interface so far.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Jonathan Corbet
Cc: Thomas Gleixner
Yi Sun (2):
X86/Hyper-V: Add Guest IDL
Follow PV spinlock mechanism to implement the callback functions
to allow the CPU idling and kicking operations on Hyper-V.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Signed-off-by: Yi Sun
---
v1->v2:
- compile hv_spinloc
Hemminger
Signed-off-by: Yi Sun
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index e977b6b..2a2fa17 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/
cpu exit idle state.
In vcpu_is_preempted callback function, return false directly
because Hyper-V does not provide such interface so far.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Jonathan Corbet
Cc: Thomas Gleixner
Yi Sun (2):
X86/Hyper-V: Add Guest IDL
Follow PV spinlock mechanism to implement the callback functions
to allow the CPU idling and kicking operations on Hyper-V.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Thomas Gleixner
Signed-off-by: Yi Sun
---
v1->v2:
- compile hv_spinloc
Hemminger
Signed-off-by: Yi Sun
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index e977b6b..2a2fa17 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/
Hi,
On 18-09-17 20:54:52, Yi Sun wrote:
> On 18-09-14 12:42:33, Thomas Gleixner wrote:
> > On Fri, 14 Sep 2018, Yi Sun wrote:
> > > > > +static void hv_notify_long_spin_wait(void)
> > > > > +{
> > > > > + u64 input = spin_wait_info |
Hi,
On 18-09-17 20:54:52, Yi Sun wrote:
> On 18-09-14 12:42:33, Thomas Gleixner wrote:
> > On Fri, 14 Sep 2018, Yi Sun wrote:
> > > > > +static void hv_notify_long_spin_wait(void)
> > > > > +{
> > > > > + u64 input = spin_wait_info |
On 18-09-15 23:43:12, Michael Kelley (EOSG) wrote:
> >From Yi Sun Sent: Thursday, September 13, 2018 2:13 AM
>
> > This patch adds the necessary Hyper-V specific code to allow
> > PV qspinlock work on Hyper-V.
> >
>
> Have you done any performance measurements
On 18-09-15 23:43:12, Michael Kelley (EOSG) wrote:
> >From Yi Sun Sent: Thursday, September 13, 2018 2:13 AM
>
> > This patch adds the necessary Hyper-V specific code to allow
> > PV qspinlock work on Hyper-V.
> >
>
> Have you done any performance measurements
On 18-09-14 12:42:33, Thomas Gleixner wrote:
> On Fri, 14 Sep 2018, Yi Sun wrote:
> > > > +static void hv_notify_long_spin_wait(void)
> > > > +{
> > > > + u64 input = spin_wait_info | 0x;
> > >
> > > What? The resul
On 18-09-14 12:42:33, Thomas Gleixner wrote:
> On Fri, 14 Sep 2018, Yi Sun wrote:
> > > > +static void hv_notify_long_spin_wait(void)
> > > > +{
> > > > + u64 input = spin_wait_info | 0x;
> > >
> > > What? The resul
On 18-09-13 13:24:07, Thomas Gleixner wrote:
> On Thu, 13 Sep 2018, Yi Sun wrote:
> > +++ b/arch/x86/hyperv/hv_spinlock.c
> > @@ -0,0 +1,99 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +
> > +/*
> > + * Hyper-V specific spinlock code.
> &g
On 18-09-13 13:24:07, Thomas Gleixner wrote:
> On Thu, 13 Sep 2018, Yi Sun wrote:
> > +++ b/arch/x86/hyperv/hv_spinlock.c
> > @@ -0,0 +1,99 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +
> > +/*
> > + * Hyper-V specific spinlock code.
> &g
On 18-09-13 13:06:13, Thomas Gleixner wrote:
> On Thu, 13 Sep 2018, Yi Sun wrote:
> > +#include
> >
> > /* representing HT siblings of each logical CPU */
> > DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map);
> > @@ -1335,6 +1336,7 @@ void __init
On 18-09-13 13:06:13, Thomas Gleixner wrote:
> On Thu, 13 Sep 2018, Yi Sun wrote:
> > +#include
> >
> > /* representing HT siblings of each logical CPU */
> > DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map);
> > @@ -1335,6 +1336,7 @@ void __init
that is potentially held by another virtual
processor within the same partition. This scheduling hint improves the
scalability of partitions with more than one virtual processor.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Signed-off-by: Yi Sun
---
arch/x86/hyperv/Makefile
Hemminger
Signed-off-by: Yi Sun
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index e977b6b..2a2fa17 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/
hv_nopvspin is a command line parameter used to
disable Hyper-V PV spinlock.
Cc: Jonathan Corbet
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Signed-off-by: Yi Sun
---
Documentation/admin-guide/kernel-parameters.txt | 5 +
1 file changed, 5 insertions(+)
that is potentially held by another virtual
processor within the same partition. This scheduling hint improves the
scalability of partitions with more than one virtual processor.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Signed-off-by: Yi Sun
---
arch/x86/hyperv/Makefile
Hemminger
Signed-off-by: Yi Sun
---
arch/x86/include/asm/hyperv-tlfs.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h
b/arch/x86/include/asm/hyperv-tlfs.h
index e977b6b..2a2fa17 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/
hv_nopvspin is a command line parameter used to
disable Hyper-V PV spinlock.
Cc: Jonathan Corbet
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Signed-off-by: Yi Sun
---
Documentation/admin-guide/kernel-parameters.txt | 5 +
1 file changed, 5 insertions(+)
han Corbet
Yi Sun (3):
X86/Hyper-V: Add Guest IDLE MSR support
locking/pvqspinlock, hv: Enable PV qspinlock for Hyper-V
hv: add description for hv_nopvspin
Documentation/admin-guide/kernel-parameters.txt | 5 ++
arch/x86/hyperv/Makefile| 2 +-
arch/x86/hyperv/hv_
han Corbet
Yi Sun (3):
X86/Hyper-V: Add Guest IDLE MSR support
locking/pvqspinlock, hv: Enable PV qspinlock for Hyper-V
hv: add description for hv_nopvspin
Documentation/admin-guide/kernel-parameters.txt | 5 ++
arch/x86/hyperv/Makefile| 2 +-
arch/x86/hyperv/hv_
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