Nowadays, when running powerKVM(book3s, hv mode), we should make the secondary
hwthread
offline. Which means that if we run misc tsks other than dedicated KVM (e.g mix
java and KVM),
we will lose the compute power of the secondary hwthread on host env.
This series aim to make the powerpc adapti
Some system such as powerpc, some tsk (vcpu thread) can only run on
the dedicated cpu. Since we adapt some asymmetric method to monitor the
whole physical cpu. (powerKVM only allows the primary hwthread to
set up runtime env for the secondary when entering guest).
Nowadays, powerKVM run with all t
When vcpu thread runs at the first time, it will ensure to stick
to the primary thread.
Signed-off-by: Liu Ping Fan
---
arch/powerpc/include/asm/kvm_host.h | 3 +++
arch/powerpc/kvm/book3s_hv.c| 17 +
2 files changed, 20 insertions(+)
diff --git a/arch/powerpc/include/a
When kvm is enabled on a core, we migrate all external irq to primary
thread. Since currently, the kvmirq logic is handled by the primary
hwthread.
Todo: this patch lacks re-enable of irqbalance when kvm is disable on
the core
Signed-off-by: Liu Ping Fan
---
arch/powerpc/kernel/sysfs.c
(This patch is a place holder.)
If there is only one vcpu thread is ready(the other vcpu thread can
wait for it to execute), the primary thread can enter tickless mode,
which causes the primary keeps running, so the secondary has no
opportunity to exit to host, even they have other tsk on them.
I
The proto will be:
cpu1 cpuX
stop_cpus_async()
bring cpuX to a special state
signal flag and trapped
check for flag
The func help powerpc to reuse the scheme of cpu_stopper_task
to force the s
Nowadays, powerKVM runs with secondary hwthread offline. Although
we can make all secondary hwthread online later, we still preserve
this behavior for dedicated KVM env. Achieve this by setting
paca->online as false.
Signed-off-by: Liu Ping Fan
---
arch/powerpc/include/asm/paca.h | 3 ++
To enter guest, primary hwtherad schedules the stopper func on
secondary threads and force them into NAP mode.
When exit to host,secondary threads hardcode to restore the stack,
then switch back to the stopper func, i.e host.
Signed-off-by: Liu Ping Fan
---
arch/powerpc/kvm/book3s_hv.c
The secondary thread can only jump back to host until primary has set
up the env. Add host_ready field in kvm_vcore to sync this action.
Signed-off-by: Liu Ping Fan
---
arch/powerpc/include/asm/kvm_host.h | 3 +++
arch/powerpc/kernel/asm-offsets.c | 3 +++
arch/powerpc/kvm/book3s_hv_
(This is a place holder patch.)
We need to store the time base for host on secondary hwthread.
Later when switching back, we need to reprogram it with elapse
time.
Signed-off-by: Liu Ping Fan
---
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 6 ++
1 file changed, 6 insertions(+)
diff --git a/ar
The primary hwthread ceases the scheduler of secondary hwthread by
bringing them into NAP. Then, the secondary is ready for guest.
Signed-off-by: Liu Ping Fan
---
arch/powerpc/kvm/book3s_hv.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/k
Signed-off-by: Liu Ping Fan
---
arch/powerpc/kvm/Kconfig | 4
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index 602eb51..de38566 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -93,6 +93,10 @@ config KVM_BOOK3S_64_
On Wed, Oct 15, 2014 at 07:52:16AM -0600, Bjorn Helgaas wrote:
>On Wed, Oct 15, 2014 at 3:00 AM, Wei Yang wrote:
>> On Thu, Oct 02, 2014 at 09:59:43AM -0600, Bjorn Helgaas wrote:
>...
>>>I haven't seen any more on this series, and I'm assuming you'll post a
>>>rebased series (maybe you're waiting
Hi,
Le mardi 14 octobre 2014 à 12:57 +1100, Michael Ellerman a écrit :
> On Mon, 2014-10-13 at 21:30 +0200, Yann Droneaud wrote:
> > This patch replaces calls to get_unused_fd() with equivalent call to
> > get_unused_fd_flags(0) to preserve current behavor for existing code.
> >
> > In a further
chanctnt is already filled by dma_async_device_register, which uses the channel
list to know how much channels there is.
Since it's already filled, we can safely remove it from the drivers' probe
function.
Signed-off-by: Maxime Ripard
---
drivers/dma/fsldma.c | 1 -
1 file changed, 1 deletion(-
On Wed, Oct 15, 2014 at 10:04:47PM +0530, Aneesh Kumar K.V wrote:
> Update generic gup implementation with powerpc specific details.
> On powerpc at pmd level we can have hugepte, normal pmd pointer
> or a pointer to the hugepage directory.
>
> Signed-off-by: Aneesh Kumar K.V
Hi,
This patch caus
Split the device_control callback of the Freescale Elo DMA driver to make use
of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.
While we're at it, remove the useless prep_sg callback.
Signed-off-by: Maxime Ripard
---
drivers/dma/fsldma.c | 100 +
Hi,
This tries to fix a kernel panic introduced by commit da788acb2838
("clk: ppc-corenet: Fix Section mismatch warning").
Kevin Hao (2):
powerpc: move ppc_init() to common place
clk: ppc-corenet: don't use platform_driver to init the clock device
arch/powerpc/include/asm/machdep.h
So they can be used by ppc64 board. Also remove the unneeded {} to
make checkpatch happy.
Signed-off-by: Kevin Hao
---
arch/powerpc/include/asm/machdep.h | 2 +-
arch/powerpc/kernel/setup-common.c | 15 +++
arch/powerpc/kernel/setup_32.c | 15 ---
3 files changed, 16
In commit da788acb2838 ("clk: ppc-corenet: Fix Section mismatch
warning"), we put the ppc_corenet_clk_driver struct to init section
in order to fix section mismatch warning. This is definitely wrong
because the kernel would free the memories occupied by
ppc_corenet_clk_driver after boot while this
On Wed, 15 Oct 2014, Yijing Wang wrote:
> Use MSI chip framework instead of arch MSI functions to configure
> MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework.
>
> Signed-off-by: Yijing Wang
> ---
> Hi Sebastian,
>I dropped the Acked-by , because this version has a
> lot c
(hope my email makes it everywhere, using a webmail client at the moment as I'm
at plumbersconf
Michael Ellerman hat am 16. Oktober 2014 um 05:22
geschrieben:
>
>
> Commit 0b0b0893d49b "of/pci: Fix the conversion of IO ranges into IO
> resources" changed the behaviour of of_pci_range_to_resource(
Steve Capper writes:
> On Wed, Oct 15, 2014 at 10:04:47PM +0530, Aneesh Kumar K.V wrote:
>> Update generic gup implementation with powerpc specific details.
>> On powerpc at pmd level we can have hugepte, normal pmd pointer
>> or a pointer to the hugepage directory.
>>
>> Signed-off-by: Aneesh K
On Thu, Oct 16, 2014 at 08:48:20PM +0530, Aneesh Kumar K.V wrote:
> Steve Capper writes:
>
> > On Wed, Oct 15, 2014 at 10:04:47PM +0530, Aneesh Kumar K.V wrote:
> >> Update generic gup implementation with powerpc specific details.
> >> On powerpc at pmd level we can have hugepte, normal pmd point
Steve Capper writes:
> Can we not just add a:
> #define pgd_huge(pgd) (0)
> above the "#endif /* CONFIG_HUGETLB_PAGE */" line in the second patch?
> (or, more precisely, prevent the second patch from removing this line).
>
> That way we get a clearer code overall?
it is strange to have b
Check old_devdata->dev in nx-842 driver before accessing it, as
on systems without any nx-842 hardware, the ->dev will never be
set. Currently, the module will cause an oops during unload
since old_devdata->dev is null.
Signed-off-by: Dan Streetman
---
Also Seth and Rob, you guys should change
On Thu, 2014-10-16 at 17:47 +1100, Michael Ellerman wrote:
> Scott's patch 1c98025c6c95 "Dynamic DMA zone limits" changed
> dma_direct_alloc_coherent() to start using dev->coherent_dma_mask.
>
> That seems fair enough, but it exposes the fact that some of the drivers
> we care about on IBM platfor
On Thu, 2014-10-16 at 19:18 +0800, Kevin Hao wrote:
> Hi,
>
> This tries to fix a kernel panic introduced by commit da788acb2838
> ("clk: ppc-corenet: Fix Section mismatch warning").
That patch is just wrong and should be reverted, separately from any new
attempt to fix the section mismatch warni
On Thu, 2014-10-16 at 19:18 +0800, Kevin Hao wrote:
> So they can be used by ppc64 board. Also remove the unneeded {} to
> make checkpatch happy.
>
> Signed-off-by: Kevin Hao
> ---
> arch/powerpc/include/asm/machdep.h | 2 +-
> arch/powerpc/kernel/setup-common.c | 15 +++
> arch/pow
On Thu, 2014-10-16 at 19:18 +0800, Kevin Hao wrote:
> In commit da788acb2838 ("clk: ppc-corenet: Fix Section mismatch
> warning"), we put the ppc_corenet_clk_driver struct to init section
> in order to fix section mismatch warning. This is definitely wrong
> because the kernel would free the memori
On Thu, Oct 16, 2014 at 11:49:22PM +0200, Scott Wood wrote:
> On Thu, 2014-10-16 at 19:18 +0800, Kevin Hao wrote:
> > Hi,
> >
> > This tries to fix a kernel panic introduced by commit da788acb2838
> > ("clk: ppc-corenet: Fix Section mismatch warning").
>
> That patch is just wrong and should be r
On Thu, Oct 16, 2014 at 11:54:46PM +0200, Scott Wood wrote:
> On Thu, 2014-10-16 at 19:18 +0800, Kevin Hao wrote:
> > So they can be used by ppc64 board. Also remove the unneeded {} to
> > make checkpatch happy.
> >
> > Signed-off-by: Kevin Hao
> > ---
> > arch/powerpc/include/asm/machdep.h | 2
On Thu, 2014-10-16 at 15:30 -0400, Dan Streetman wrote:
> Check old_devdata->dev in nx-842 driver before accessing it, as
> on systems without any nx-842 hardware, the ->dev will never be
> set. Currently, the module will cause an oops during unload
> since old_devdata->dev is null.
Hi Dan,
Patc
On Fri, 2014-10-17 at 09:43 +1100, Michael Ellerman wrote:
> On Thu, 2014-10-16 at 15:30 -0400, Dan Streetman wrote:
> > Check old_devdata->dev in nx-842 driver before accessing it, as
> > on systems without any nx-842 hardware, the ->dev will never be
> > set. Currently, the module will cause an
On Thu, Oct 16, 2014 at 11:55:23PM +0200, Scott Wood wrote:
> On Thu, 2014-10-16 at 19:18 +0800, Kevin Hao wrote:
> > diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c
> > b/arch/powerpc/platforms/85xx/corenet_generic.c
> > index e56b89a792ed..7677cfecb787 100644
> > --- a/arch/powerpc/pl
On 2014/10/16 20:13, Sebastian Ott wrote:
> On Wed, 15 Oct 2014, Yijing Wang wrote:
>> Use MSI chip framework instead of arch MSI functions to configure
>> MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework.
>>
>> Signed-off-by: Yijing Wang
>> ---
>> Hi Sebastian,
>>I dropped
Hi Dan & Vinod,
I have sent out the v4 of this patch and not received any further feedback yet.
This patch looks ruled out from the patchwork.
https://patchwork.kernel.org/project/linux-dmaengine/list/?page=2
So do you know what happened to this patch?
Thanks,
Xuelin Shi
-Original Messag
From: Tang Yuantian
Freescale introduced new ARM core-based SoCs which support dynamic
frequency switch feature. DFS on new SoCs are compatible with current
PowerPC CoreNet platforms. In order to support those new platforms,
this driver needs to be slightly adjusted. The main changes include:
1.
On Mon, 2014-10-13 at 11:30 -0500, Timur Tabi wrote:
> On Fri, Oct 10, 2014 at 1:05 PM, Scott Wood wrote:
> > There are many changes in here that ought to be separate patches with
> > separate justification.
> >
> > Also, some of the QE changes seem to be reasonable cleanup, but not
> > related to
Update generic gup implementation with powerpc specific details.
On powerpc at pmd level we can have hugepte, normal pmd pointer
or a pointer to the hugepage directory.
Signed-off-by: Aneesh Kumar K.V
---
Changes from V1:
* Folded arm/arm64 related changes into the patch
* Dropped pgd_huge from
This patch switch the ppc arch to use the generic RCU based
gup implementation.
Signed-off-by: Aneesh Kumar K.V
---
Changes from V1:
* added pgd_huge definition back
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/hugetlb.h | 8 +-
arch/powerpc/include/asm/pag
On Fri, 2014-10-17 at 06:55 +0800, Kevin Hao wrote:
> On Thu, Oct 16, 2014 at 11:55:23PM +0200, Scott Wood wrote:
> > On Thu, 2014-10-16 at 19:18 +0800, Kevin Hao wrote:
> > > diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c
> > > b/arch/powerpc/platforms/85xx/corenet_generic.c
> > > ind
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