On 2018-07-19 19:03, Brian Foster wrote:
cc linux-xfs
On Thu, Jul 19, 2018 at 11:47:59AM +0530, vrbagal1 wrote:
On 2018-07-10 19:12, Michael Ellerman wrote:
> vrbagal1 writes:
>
> > On 2018-07-10 13:37, Nicholas Piggin wrote:
> > > On Tue, 10 Jul 2018 11:58:40 +0530
> > > vrbagal1 wrote:
> >
On Thu, 2018-07-19 at 10:04 -0700, Andy Lutomirski wrote:
> On Thu, Jul 19, 2018 at 9:45 AM, Andy Lutomirski wrote:
> > [I added PeterZ and Vitaly -- can you see any way in which this would
> > break something obscure? I don't.]
Added Nick and Aneesh. We do have HW remote flushes on powerpc.
>
On Thu, 2018-07-19 at 20:55 +0200, Lukas Wunner wrote:
> On Thu, Jul 19, 2018 at 9:48 AM, Benjamin Herrenschmidt
> > Indeed. However I'm not fan of the solution. Shouldn't we instead have
> > some locking for the content of pci_dev? I've always been wary of us
> > having other similar races in
This adds a hook which a platform can define in order to allow it to
override virtio device's DMA OPS irrespective of whether it has the
flag VIRTIO_F_IOMMU_PLATFORM set or not. We want to use this to do
bounce-buffering of data on the new secure pSeries platform, currently
under development,
Virtio core should use DMA API callbacks for all virtio devices which may
generate either GAP or IOVA depending on VIRTIO_F_IOMMU_PLATFORM flag and
resulting QEMU expectations. This implies that every virtio device needs
to have a DMA OPS structure. This removes previous GPA fallback code paths.
Now that virtio core always needs all virtio devices to have DMA OPS, we
need to make sure that the structure it points is the right one. In the
absence of VIRTIO_F_IOMMU_PLATFORM flag QEMU expects GPA from guest kernel.
In such case, virtio device must use default virtio_direct_dma_ops DMA OPS
Current implementation of DMA API inside virtio core calls device's DMA OPS
callback functions when the flag VIRTIO_F_IOMMU_PLATFORM flag is set. But
in absence of the flag, virtio core falls back calling basic transformation
of the incoming SG addresses as GPA. Going forward virtio should only
This patch series is the follow up on the discussions we had before about
the RFC titled [RFC,V2] virtio: Add platform specific DMA API translation
for virito devices (https://patchwork.kernel.org/patch/10417371/). There
were suggestions about doing away with two different paths of transactions
On Thu, Jul 19, 2018 at 04:06:10PM +1000, Michael Ellerman wrote:
> On Tue, 2018-07-17 at 07:19:12 UTC, Alexey Kardashevskiy wrote:
> > The size is always equal to 1 page so let's use this. Later on this will
> > be used for other checks which use page shifts to check the granularity
> > of
On Fri, 2018-07-20 at 12:32 +1000, Michael Ellerman wrote:
> Michael Neuling writes:
> > On Wed, 2018-07-18 at 13:42 +0530, Gautham R Shenoy wrote:
> > > On Wed, Jul 18, 2018 at 09:24:19AM +1000, Michael Neuling wrote:
> > > >
> > > > > DEFINE(PPC_DBELL_SERVER, PPC_DBELL_SERVER);
> > > > >
Stephen Rothwell writes:
> Hi all,
>
> Today's linux-next merge of the powerpc tree got a conflict in:
>
> drivers/vfio/vfio_iommu_spapr_tce.c
>
> between commit:
>
> 1463edca6734 ("vfio/spapr: Use IOMMU pageshift rather than pagesize")
>
> from the powerpc-fixes tree and commit:
>
>
Michael Neuling writes:
> On Wed, 2018-07-18 at 13:42 +0530, Gautham R Shenoy wrote:
>> On Wed, Jul 18, 2018 at 09:24:19AM +1000, Michael Neuling wrote:
>> >
>> > > DEFINE(PPC_DBELL_SERVER, PPC_DBELL_SERVER);
>> > > diff --git a/arch/powerpc/kernel/idle_book3s.S
>> > >
On Wed, 2018-07-18 at 13:42 +0530, Gautham R Shenoy wrote:
> Hello Mikey,
>
> On Wed, Jul 18, 2018 at 09:24:19AM +1000, Michael Neuling wrote:
> >
> > > DEFINE(PPC_DBELL_SERVER, PPC_DBELL_SERVER);
> > > diff --git a/arch/powerpc/kernel/idle_book3s.S
> > > b/arch/powerpc/kernel/idle_book3s.S
>
Hi all,
Today's linux-next merge of the powerpc tree got a conflict in:
drivers/vfio/vfio_iommu_spapr_tce.c
between commit:
1463edca6734 ("vfio/spapr: Use IOMMU pageshift rather than pagesize")
from the powerpc-fixes tree and commit:
00a5c58d9499 ("KVM: PPC: Make
Hi Bjonr, Ben
On Thu, Jul 19, 2018 at 9:48 AM, Benjamin Herrenschmidt
wrote:
> On Wed, 2018-07-18 at 18:29 -0500, Bjorn Helgaas wrote:
>> [+cc Paul, Michael, linuxppc-dev]
>>
>
>/...
>
>> > Debugging revealed a race condition between pcie core driver
>> > enabling is_added
Hi Geert, Geoff,
> > > so I added a sleep with
> > >
> > > + msleep(1);
>
> I can't see where you added the sleep, but 10s seems excessive.
> If the real reason is the need to wait for an interrupt for
> ps3fb_sync_image(),
> then waiting for 40 ms should be sufficient? Or am I missing
On Thu, 19 Jul 2018 23:17:53 +0800 Baoquan He wrote:
> Hi Andrew,
>
> On 07/18/18 at 03:33pm, Andrew Morton wrote:
> > On Wed, 18 Jul 2018 10:49:44 +0800 Baoquan He wrote:
> >
> > > For kexec_file loading, if kexec_buf.top_down is 'true', the memory which
> > > is used to load
On Thu, Jul 19, 2018 at 5:17 AM, Michael Ellerman wrote:
> Kees Cook writes:
>
>> On Fri, Jun 29, 2018 at 11:52 AM, Kees Cook wrote:
>>> In the quest to remove all stack VLA usage from the kernel[1], this
>>> switches from an unchanging variable to a constant expression to eliminate
>>> the VLA
On Thu, Jul 19, 2018 at 9:45 AM, Andy Lutomirski wrote:
> [I added PeterZ and Vitaly -- can you see any way in which this would
> break something obscure? I don't.]
>
> On Thu, Jul 19, 2018 at 7:14 AM, Rik van Riel wrote:
>> I guess we can skip both switch_ldt and load_mm_cr4 if real_prev
On 07/18/18 at 07:37pm, Andy Shevchenko wrote:
> On Wed, Jul 18, 2018 at 7:36 PM, Andy Shevchenko
> wrote:
> > On Wed, Jul 18, 2018 at 5:49 AM, Baoquan He wrote:
> >> reparent_resources() is duplicated in arch/microblaze/pci/pci-common.c
> >> and arch/powerpc/kernel/pci-common.c, so move it to
Hi Andrew,
On 07/18/18 at 03:33pm, Andrew Morton wrote:
> On Wed, 18 Jul 2018 10:49:44 +0800 Baoquan He wrote:
>
> > For kexec_file loading, if kexec_buf.top_down is 'true', the memory which
> > is used to load kernel/initrd/purgatory is supposed to be allocated from
> > top to down. This is
Hi Geert, Fredrik,
On 07/19/2018 12:45 AM, Geert Uytterhoeven wrote:
>> On 07/14/2018 09:49 AM, Fredrik Noring wrote:
>>>
>>> et voilà, the screen came alive and the kernel panic was revealed! It seems
>>> the kernel panics so fast that the PS3 frame buffer is unprepared. This is,
>>> of course,
On Thu, 19 Jul 2018, Geoff Levand wrote:
> Hi Alan,
>
> On 07/19/2018 07:33 AM, Alan Stern wrote:
> > On Wed, 18 Jul 2018, Geoff Levand wrote:
> >
> >> diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
> >> index 8c733492d8fe..454d8c624a3f 100644
> >> ---
Hi Alan,
On 07/19/2018 07:33 AM, Alan Stern wrote:
> On Wed, 18 Jul 2018, Geoff Levand wrote:
>
>> diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
>> index 8c733492d8fe..454d8c624a3f 100644
>> --- a/drivers/usb/host/ehci-ps3.c
>> +++ b/drivers/usb/host/ehci-ps3.c
>> @@
On Wed, 18 Jul 2018, Geoff Levand wrote:
> Set the coherent_dma_mask for the PS3 ehci, ohci, and snd devices.
>
> Silences WARN_ON_ONCE messages emitted by the dma_alloc_attrs() routine.
>
> Reported-by: Fredrik Noring
> Signed-off-by: Geoff Levand
> ---
> Hi Michael,
>
> This just silences
Paul Menzel reported that kmemleak was producing reports such as:
unreferenced object 0xc000f8b8 (size 16384):
comm "init", pid 1, jiffies 4294937416 (age 312.240s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00
cc linux-xfs
On Thu, Jul 19, 2018 at 11:47:59AM +0530, vrbagal1 wrote:
> On 2018-07-10 19:12, Michael Ellerman wrote:
> > vrbagal1 writes:
> >
> > > On 2018-07-10 13:37, Nicholas Piggin wrote:
> > > > On Tue, 10 Jul 2018 11:58:40 +0530
> > > > vrbagal1 wrote:
> > > >
> > > > > Hi,
> > > > >
On 07/18/2018 11:59 PM, Stewart Smith wrote:
Shilpasri G Bhat writes:
On-Chip-Controller(OCC) is an embedded micro-processor in POWER9 chip
which measures various system and chip level sensors. These sensors
comprises of environmental sensors (like power, temperature, current
and voltage) and
Michal Suchánek writes:
> On Tue, 3 Jul 2018 08:08:14 +1000
> "Nicholas Piggin" wrote: >> On Mon, 02 Jul 2018 11:17:06
> +0530
>> Mahesh J Salgaonkar wrote:
>> > From: Mahesh Salgaonkar
>> > diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c
>> > index
Kees Cook writes:
> On Fri, Jun 29, 2018 at 11:52 AM, Kees Cook wrote:
>> In the quest to remove all stack VLA usage from the kernel[1], this
>> switches from an unchanging variable to a constant expression to eliminate
>> the VLA generation.
>>
>> [1]
>>
LEROY Christophe writes:
> Diana Madalina Craciun a écrit :
>> On 7/17/2018 7:47 PM, LEROY Christophe wrote:
>>> Diana Craciun a écrit :
The NXP PPC Book3E platforms are not vulnerable to meltdown and
Spectre v4, so make them PPC_BOOK3S_64 specific.
Signed-off-by: Diana
Murilo Opsfelder Araujo writes:
> On Wed, Jul 18, 2018 at 07:37:37PM +1000, Michael Ellerman wrote:
>> Murilo Opsfelder Araujo writes:
>> > This property was added in 2004 by
>> >
>> >
>> > https://github.com/mpe/linux-fullhistory/commit/689fe5072fe9a0dec914bfa4fa60aed1e54563e6
>> >
>> >
Greg KH writes:
> On Wed, Jul 18, 2018 at 03:08:33PM -0700, Geoff Levand wrote:
>> Set the coherent_dma_mask for the PS3 ehci, ohci, and snd devices.
>>
>> Silences WARN_ON_ONCE messages emitted by the dma_alloc_attrs() routine.
>>
>> Reported-by: Fredrik Noring
>> Signed-off-by: Geoff Levand
On Wed 18-07-18 21:52:17, Mahesh Jagannath Salgaonkar wrote:
> On 07/17/2018 05:22 PM, Michal Hocko wrote:
> > On Tue 17-07-18 16:58:10, Mahesh Jagannath Salgaonkar wrote:
> >> On 07/16/2018 01:56 PM, Michal Hocko wrote:
> >>> On Mon 16-07-18 11:32:56, Mahesh J Salgaonkar wrote:
> One of the
Hi Geoff, Frederik,
On Thu, Jul 19, 2018 at 12:40 AM Geoff Levand wrote:
> On 07/14/2018 09:49 AM, Fredrik Noring wrote:
> > so I added a sleep with
> >
> > + msleep(1);
I can't see where you added the sleep, but 10s seems excessive.
If the real reason is the need to wait for an
Shilpasri G Bhat writes:
> On-Chip-Controller(OCC) is an embedded micro-processor in POWER9 chip
> which measures various system and chip level sensors. These sensors
> comprises of environmental sensors (like power, temperature, current
> and voltage) and performance sensors (like utilization,
On Wed, Jul 18, 2018 at 03:08:33PM -0700, Geoff Levand wrote:
> Set the coherent_dma_mask for the PS3 ehci, ohci, and snd devices.
>
> Silences WARN_ON_ONCE messages emitted by the dma_alloc_attrs() routine.
>
> Reported-by: Fredrik Noring
> Signed-off-by: Geoff Levand
> ---
> Hi Michael,
>
>
On Thu, Jul 19, 2018 at 08:46:45AM +0200, Takashi Iwai wrote:
> On Thu, 19 Jul 2018 00:08:33 +0200,
> Geoff Levand wrote:
> >
> > Set the coherent_dma_mask for the PS3 ehci, ohci, and snd devices.
> >
> > Silences WARN_ON_ONCE messages emitted by the dma_alloc_attrs() routine.
> >
> >
On Thu, 19 Jul 2018 00:08:33 +0200,
Geoff Levand wrote:
>
> Set the coherent_dma_mask for the PS3 ehci, ohci, and snd devices.
>
> Silences WARN_ON_ONCE messages emitted by the dma_alloc_attrs() routine.
>
> Reported-by: Fredrik Noring
> Signed-off-by: Geoff Levand
For sound bits,
On 2018-07-10 19:12, Michael Ellerman wrote:
vrbagal1 writes:
On 2018-07-10 13:37, Nicholas Piggin wrote:
On Tue, 10 Jul 2018 11:58:40 +0530
vrbagal1 wrote:
Hi,
Observing kernel oops on Power9(ZZ) box, running on PowerVM, while
running stress-ng.
Kernel: 4.18.0-rc4
Machine: Power9 ZZ
On Wed, 2018-07-11 at 22:03:04 UTC, Daniel Klamt wrote:
> Replaced msleep(x) with with msleep(OPAL_BUSY_DELAY_MS)
> to diocument these sleep is to wait for opal.
>
> Signed-off-by: Daniel Klamt
> Signed-off-by: Bjoern Noetel
Applied to powerpc next, thanks.
On Mon, 2018-07-02 at 07:42:05 UTC, Alexey Kardashevskiy wrote:
> The sketchy bypass uses 256M pages so add this page size as well.
>
> This should cause no behavioral change but will be used later.
>
> Fixes: 477afd6ea6 "powerpc/ioda: Use ibm,supported-tce-sizes for IOMMU page
> size mask"
>
On Wed, 2018-07-11 at 06:02:58 UTC, Joel Stanley wrote:
> This was added to support an early version of Power8 that did not have
> working doorbells. These machines were not publicly available, and all of
> the internal users have long since upgraded.
>
> Signed-off-by: Joel Stanley
Applied to
On Fri, 2018-06-29 at 18:52:54 UTC, Kees Cook wrote:
> In the quest to remove all stack VLA usage from the kernel[1], this
> switches from an unchanging variable to a constant expression to eliminate
> the VLA generation.
>
> [1]
>
On Thu, 2018-06-28 at 05:19:56 UTC, Hari Bathini wrote:
> Memory reservation for crashkernel could fail if there are holes around
> kdump kernel offset (128M). Fail gracefully in such cases and print an
> error message.
>
> Signed-off-by: Hari Bathini
> Tested-by: David Gibson
> Reviewed-by:
On Thu, 2018-06-21 at 08:33:03 UTC, Bartosz Golaszewski wrote:
> Using 'at' as the part of the compatible string is now
> deprecated. Use a correct string: 'atmel,'.
>
> Signed-off-by: Bartosz Golaszewski
Series applied to powerpc next, thanks.
On Tue, 2018-06-19 at 20:52:30 UTC, Aaro Koskinen wrote:
> Enable kernel XZ compression option on BOOK3S_32. Tested on G4 PowerBook.
>
> Signed-off-by: Aaro Koskinen
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/26064848efbca49c643d1237dc1f82
cheers
On Wed, 2018-06-13 at 13:24:14 UTC, Michael Ellerman wrote:
> When we take an SLB multi-hit on bare metal, we see both the multi-hit
> and parity error bits set in DSISR. The user manuals indicates this is
> expected to always happen on Power8, whereas on Power9 it says a
> multi-hit will
On Wed, 2018-04-25 at 06:14:55 UTC, Shilpasri G Bhat wrote:
> POWER9 doesnot support global pstate requests for the chip. So remove
> the timer logic which slowly ramps down the global pstate in P9
> platforms.
>
> Signed-off-by: Shilpasri G Bhat
> Acked-by: Viresh Kumar
Applied to powerpc
On Wed, 2018-07-18 at 08:33:16 UTC, "Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy"
>
> On 64-bit servers, SPRN_SPRG3 and its userspace read-only mirror
> SPRN_USPRG3 are used as userspace VDSO write and read registers
> respectively.
>
> SPRN_SPRG3 is lost when we enter stop4 and above,
On Tue, 2018-07-17 at 07:19:13 UTC, Alexey Kardashevskiy wrote:
> A VM which has:
> - a DMA capable device passed through to it (eg. network card);
> - running a malicious kernel that ignores H_PUT_TCE failure;
> - capability of using IOMMU pages bigger that physical pages
> can create an IOMMU
On Tue, 2018-07-17 at 07:19:12 UTC, Alexey Kardashevskiy wrote:
> The size is always equal to 1 page so let's use this. Later on this will
> be used for other checks which use page shifts to check the granularity
> of access.
>
> This should cause no behavioral change.
>
> Reviewed-by: David
On Tue, 2018-07-17 at 00:50:38 UTC, Michael Ellerman wrote:
> The recent change to add printf annotations to xmon inadvertently made
> the disassembly output ugly, eg:
>
> c0002001e058 7ee00026 mfcrr23
> c0002001e05c fae101a0 std r23,416(r1)
>
On Thu, 2018-07-12 at 21:41:49 UTC, James Clarke wrote:
> Some of the assembly files use instructions specific to BookE or E500,
> which are rejected with the now-default -mcpu=powerpc, so we must pass
> -me500 to the assembler just as we pass -me200 for E200.
>
> Fixes: 4bf4f42a2feb
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