"Aneesh Kumar K.V" writes:
> With support for split pmd lock, we use pmd page pmd_huge_pte pointer to store
> the deposited page table. In those config when we move page tables we need to
> make sure we move the depoisted page table to the right pmd page. Otherwise
> this
> can result in crash w
Hi Alex,
On Wed, Jan 23, 2019 at 5:30 AM Alex Williamson
wrote:
> The below patch comes about from the build regressions and improvements
> list you've sent out, but something doesn't add up that we'd be testing
> with an old compiler where initialization with { 0 } generates a
> "missing braces
Michael Ellerman's on January 17, 2019 9:35 pm:
> Currently in system_call_exit() we have an optimisation where we
> disable MSR_RI (recoverable interrupt) and MSR_EE (external interrupt
> enable) in a single mtmsrd instruction.
>
> Unfortunately this will no longer work with THREAD_INFO_IN_TASK,
There is no need to have the 'dummy_mask' variable static since new
value always be assigned before use it.
Signed-off-by: YueHaibing
---
drivers/usb/host/ehci-ps3.c | 2 +-
drivers/usb/host/ohci-ps3.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ehci-p
Michael Ellerman's on January 19, 2019 8:27 pm:
> Michal Suchánek writes:
>
>> On Thu, 17 Jan 2019 23:13:28 +1100
>> Michael Ellerman wrote:
>>
>>> On machines with 1TB segments and a 32-entry SLB it's quite hard to
>>> cause sufficient SLB pressure to trigger bugs caused due to badly
>>> timed
Hi Cyril,
On 03/03/2016 11:06 PM, Cyril Bur wrote:
Currently it doesn't appear the resulting binary actually uses any Altivec
or VSX instructions the solution is to explicitly tell GCC to use vector
instructions and use vector types in the code.
Part of this this issue can be GCC version specif
On 1/23/19 7:44 AM, Benjamin Herrenschmidt wrote:
> On Tue, 2019-01-22 at 16:23 +1100, Paul Mackerras wrote:
>>
>> Which ones of these could be implemented in QEMU? Are there any that
>> can't possibly be implemented in QEMU because they need to do things
>> that require calling internal interface
Christophe Leroy's on January 23, 2019 12:11 am:
> Looks like book3s/32 doesn't set RI on machine check, so
> checking RI before calling die() will always be fatal
> allthought this is not an issue in most cases.
Oh good catch, this is a fix for powerpc/64 as well. I think actually
the panic was
Michael Ellerman writes:
> It's easier to reason about the code if we only set mmu_slb_size in
> one place, so convert open-coded assignments to use slb_set_size().
>
Reviewed-by: Aneesh Kumar K.V
> Signed-off-by: Michael Ellerman
> ---
> arch/powerpc/kernel/prom.c | 2 +-
> arch/powerp
Michael Ellerman writes:
> The recent rewrite of the SLB code into C included the assumption that
> all CPUs we run on have at least 32 SLB entries. This is currently
> true but a bit fragile as the SLB size is actually defined by the
> device tree and so could theoretically change at any time.
>
Michael Ellerman writes:
> The SLB initialisation code is spread around a bit between prom.c and
> hash_utils_64.c. Consolidate it all in hash_utils_64.c.
>
> This slightly changes the timing of when mmu_slb_size is initialised,
> but that should have no effect.
Reviewed-by: Aneesh Kumar K.V
>
Michael Ellerman writes:
> On machines with 1TB segments and a 32-entry SLB it's quite hard to
> cause sufficient SLB pressure to trigger bugs caused due to badly
> timed SLB faults.
>
> We have seen this in the past and a few years ago added the
> disable_1tb_segments command line option to forc
Le 12/01/2019 à 10:55, Christophe Leroy a écrit :
The purpose of this serie is to activate CONFIG_THREAD_INFO_IN_TASK which
moves the thread_info into task_struct.
Moving thread_info into task_struct has the following advantages:
- It protects thread_info from corruption in the case of stack
On Wed, Jan 23, 2019 at 05:45:24PM +1100, Benjamin Herrenschmidt wrote:
> On Tue, 2019-01-22 at 16:26 +1100, Paul Mackerras wrote:
> > On Mon, Jan 07, 2019 at 08:10:05PM +0100, Cédric Le Goater wrote:
> > > Clear the ESB pages from the VMA of the IRQ being pass through to the
> > > guest and let th
On Wed, Jan 23, 2019 at 09:48:31AM +0100, Cédric Le Goater wrote:
> On 1/23/19 7:44 AM, Benjamin Herrenschmidt wrote:
> > On Tue, 2019-01-22 at 16:23 +1100, Paul Mackerras wrote:
> >> Why do we need to provide real-mode versions of these hypercall
> >> handlers? I thought these hypercalls would on
On 1/23/19 11:26 AM, Paul Mackerras wrote:
> On Wed, Jan 23, 2019 at 09:48:31AM +0100, Cédric Le Goater wrote:
>> On 1/23/19 7:44 AM, Benjamin Herrenschmidt wrote:
>>> On Tue, 2019-01-22 at 16:23 +1100, Paul Mackerras wrote:
Why do we need to provide real-mode versions of these hypercall
On 1/23/19 11:30 AM, Paul Mackerras wrote:
> On Wed, Jan 23, 2019 at 05:45:24PM +1100, Benjamin Herrenschmidt wrote:
>> On Tue, 2019-01-22 at 16:26 +1100, Paul Mackerras wrote:
>>> On Mon, Jan 07, 2019 at 08:10:05PM +0100, Cédric Le Goater wrote:
Clear the ESB pages from the VMA of the IRQ bei
Hi Christoph,
I also compiled a kernel (zImage) for the X1000 from your Git
'powerpc-dma.6-debug' (both patches) today.
It boots and the P.A. Semi Ethernet works!
I will test just the first patch tomorrow.
Thanks,
Christian
On 21 January 2019 at 3:38PM, Christian Zigotzky wrote:
Hello Ch
Le 27/09/2016 à 16:10, Rui Teng a écrit :
From: Anton Blanchard
Pull in a version of Anton's null_syscall benchmark:
http://ozlabs.org/~anton/junkcode/null_syscall.c
Into tools/testing/selftests/powerpc/benchmarks.
Suggested-by: Michael Ellerman
Signed-off-by: Anton Blanchard
Signed-off-b
Hi Rob,
On Tue, Dec 11, 2018 at 9:24 PM Rob Herring wrote:
> This adds the build infrastructure for checking DT binding schema
> documents and validating dts files using the binding schema.
>
> Check DT binding schema documents:
> make dt_binding_check
>
> Build dts files and check using DT bindi
On 1/22/19 5:56 AM, Paul Mackerras wrote:
> On Mon, Jan 07, 2019 at 07:43:15PM +0100, Cédric Le Goater wrote:
>> We will have different KVM devices for interrupts, one for the
>> XICS-over-XIVE mode and one for the XIVE native exploitation
>> mode. Let's add some checks to make sure we are not mixi
On 1/22/19 6:05 AM, Paul Mackerras wrote:
> On Mon, Jan 07, 2019 at 07:43:17PM +0100, Cédric Le Goater wrote:
>> This is the basic framework for the new KVM device supporting the XIVE
>> native exploitation mode. The user interface exposes a new capability
>> and a new KVM device to be used by QEMU
On 1/22/19 6:14 AM, Paul Mackerras wrote:
> On Mon, Jan 07, 2019 at 07:43:20PM +0100, Cédric Le Goater wrote:
>> The ESB MMIO region controls the interrupt sources of the guest. QEMU
>> will query an fd (GET_ESB_FD ioctl) and map this region at a specific
>> address for the guest to use. The guest
On 1/22/19 6:09 AM, Paul Mackerras wrote:
> On Mon, Jan 07, 2019 at 07:43:18PM +0100, Cédric Le Goater wrote:
>> This will let the guest create a memory mapping to expose the ESB MMIO
>> regions used to control the interrupt sources, to trigger events, to
>> EOI or to turn off the sources.
>>
>> Si
On 1/22/19 6:42 AM, Paul Mackerras wrote:
> On Mon, Jan 07, 2019 at 08:10:06PM +0100, Cédric Le Goater wrote:
>> This will be used to destroy the KVM XICS or XIVE device when the
>> sPAPR machine is reseted. When the VM boots, the CAS negotiation
>> process will determine which interrupt mode to us
On 1/22/19 5:46 AM, Paul Mackerras wrote:
> On Mon, Jan 07, 2019 at 07:43:12PM +0100, Cédric Le Goater wrote:
>> Hello,
>>
>> On the POWER9 processor, the XIVE interrupt controller can control
>> interrupt sources using MMIO to trigger events, to EOI or to turn off
>> the sources. Priority manageme
On Wed, 23 Jan 2019 15:07:11 +1100
Alexey Kardashevskiy wrote:
> Using the {0} construct as a generic initializer is perfectly fine in C,
> however due to a bug in old gcc there is a warning:
>
> + /kisskb/src/drivers/vfio/pci/vfio_pci_nvlink2.c: warning: (near
> initialization for 'cap.header
This patch is to check for cede'ed CPUs during LPM. Some extreme
tests encountered a problem ehere Linux has put some threads to
sleep (possibly to save energy or something), LPM was attempted,
and the Linux kernel didn't awaken the sleeping threads, but issued
the H_JOIN for the active threads.
On Wed, 2019-01-23 at 21:30 +1100, Paul Mackerras wrote:
> > Afaik bcs we change the mapping to point to the real HW irq ESB page
> > instead of the "IPI" that was there at VM init time.
>
> So that makes it sound like there is a whole lot going on that hasn't
> even been hinted at in the patch de
On Wed, 23 Jan 2019, YueHaibing wrote:
> There is no need to have the 'dummy_mask' variable static since new
> value always be assigned before use it.
>
> Signed-off-by: YueHaibing
> ---
> drivers/usb/host/ehci-ps3.c | 2 +-
> drivers/usb/host/ohci-ps3.c | 2 +-
> 2 files changed, 2 insertions(
Geert Uytterhoeven writes:
> Hi Alex,
>
> On Wed, Jan 23, 2019 at 5:30 AM Alex Williamson
> wrote:
>> The below patch comes about from the build regressions and improvements
>> list you've sent out, but something doesn't add up that we'd be testing
>> with an old compiler where initialization wit
LEROY Christophe writes:
> Michael Ellerman a écrit :
>
>> Christophe Leroy writes:
>>
>>> The purpose of this serie is to activate CONFIG_THREAD_INFO_IN_TASK which
>>> moves the thread_info into task_struct.
>>>
>>> Moving thread_info into task_struct has the following advantages:
>>> - It prot
Christophe Leroy writes:
> Le 19/01/2019 à 11:23, Michael Ellerman a écrit :
>> Christophe Leroy writes:
>>
>>> The purpose of this serie is to activate CONFIG_THREAD_INFO_IN_TASK which
>>> moves the thread_info into task_struct.
>>>
>>> Moving thread_info into task_struct has the following adva
Christophe Leroy writes:
> Le 12/01/2019 à 10:55, Christophe Leroy a écrit :
>> The purpose of this serie is to activate CONFIG_THREAD_INFO_IN_TASK which
>> moves the thread_info into task_struct.
>>
>> Moving thread_info into task_struct has the following advantages:
>> - It protects thread_info
On 2019/1/24 0:09, Alan Stern wrote:
> On Wed, 23 Jan 2019, YueHaibing wrote:
>
>> There is no need to have the 'dummy_mask' variable static since new
>> value always be assigned before use it.
>>
>> Signed-off-by: YueHaibing
>> ---
>> drivers/usb/host/ehci-ps3.c | 2 +-
>> drivers/usb/host/ohci
On Fri, 2019-01-04 at 21:31:52 UTC, Matteo Croce wrote:
> Fix spelling mistake: "lenght" -> "length"
>
> Signed-off-by: Matteo Croce
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/3b702ddd066813952154c22dd76d3b0c
cheers
On Mon, 2019-01-07 at 09:57:20 UTC, Sergey Senozhatsky wrote:
> Use a CONSOLE_LOGLEVEL_DEBUG macro for console_loglevel rather
> than a naked number.
>
> Signed-off-by: Sergey Senozhatsky
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/fae1383b38a105a0454acab19b094c51
cheers
On Tue, 2019-01-08 at 11:31:21 UTC, Breno Leitao wrote:
> A new self test that forces MSR[TS] to be set without calling any TM
> instruction. This test also tries to cause a page fault at a signal
> handler, exactly between MSR[TS] set and tm_recheckpoint(), forcing
> thread->texasr to be rewritten
On Tue, 2019-01-08 at 11:37:19 UTC, Christophe Leroy wrote:
> arch_early_irq_init() does nothing different than
> the weak arch_early_irq_init() in kernel/softirq.c
>
> Fixes: 089fb442f301 ("powerpc: Use ARCH_IRQ_INIT_FLAGS")
> Cc: Thomas Gleixner
> Signed-off-by: Christophe Leroy
> Acked-by: Th
On Tue, 2019-01-08 at 12:52:50 UTC, Corentin Labbe wrote:
> I wanted to test the virtex440-ml507 qemu machine and found that the dtb
> for it was not builded.
> All powerpc DTB are only built when CONFIG_OF_ALL_DTBS is set which depend on
> COMPILE_TEST.
>
> This patchs adds build of virtex dtbs d
On Tue, 2019-01-08 at 15:08:00 UTC, Christophe Leroy wrote:
> ipic_set_highest_priority(), ipic_enable_mcp() and ipic_disable_mcp()
> are unused. This patch drops them.
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/8acb88682cc00a41a677c245
On Tue, 2019-01-08 at 18:37:20 UTC, "Gustavo A. R. Silva" wrote:
> One of the more common cases of allocation size calculations is finding
> the size of a structure that has a zero-sized array at the end, along
> with memory for some number of elements for that array. For example:
>
> struct foo {
On Tue, 2019-01-08 at 21:00:10 UTC, "Gustavo A. R. Silva" wrote:
> One of the more common cases of allocation size calculations is finding the
> size of a structure that has a zero-sized array at the end, along with memory
> for some number of elements for that array. For example:
>
> struct foo {
On Wed, 2019-01-09 at 12:10:58 UTC, YueHaibing wrote:
> Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
> for debugfs files.
>
> Semantic patch information:
> Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
> imposes some significant overhead as compared to
> DEFINE_DEB
On Thu, 2019-01-10 at 11:57:35 UTC, Michael Ellerman wrote:
> Using pr_cont() risks having our output interleaved with other output
> from other CPUs. Instead print everything in a single printk() call.
>
> Signed-off-by: Michael Ellerman
> Reviewed-by: Christophe Leroy
Series applied to powerp
On Fri, 2019-01-11 at 03:22:31 UTC, Masahiro Yamada wrote:
> The header search path -I. in kernel Makefiles is very suspicious;
> it allows the compiler to search for headers in the top of $(srctree),
> where obviously no header file exists.
>
> Commit 46f43c6ee022 ("KVM: powerpc: convert marker p
On Fri, 2019-01-11 at 23:50:56 UTC, Joel Stanley wrote:
> In the ld documentation under Builtin Functions:
>
> BLOCK(exp)
>
> This is a synonym for ALIGN, for compatibility with older linker scripts.
>
> Clang's linker (lld) doesn't know about BLOCK so remove this use of it.
>
> Link: htt
On Sat, 2019-01-12 at 16:21:23 UTC, =?utf-8?q?Jonathan_Neusch=C3=A4fer?= wrote:
> The Hollywood GPIO controller is connected to the Hollywood PIC (&PIC1)
> at IRQs 10 and 11; IRQ 10 for GPIO lines that are configured for access
> by the PPC, 11 for GPIO lines that are configured for access by the
>
On Sat, 2019-01-12 at 16:21:23 UTC, =?utf-8?q?Jonathan_Neusch=C3=A4fer?= wrote:
> The Hollywood GPIO controller is connected to the Hollywood PIC (&PIC1)
> at IRQs 10 and 11; IRQ 10 for GPIO lines that are configured for access
> by the PPC, 11 for GPIO lines that are configured for access by the
>
On Mon, 2019-01-14 at 00:38:49 UTC, Alexey Kardashevskiy wrote:
> This adds some stubs for hash only configs.
>
> Signed-off-by: Alexey Kardashevskiy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/cd6b8a631c5de3a6b7c8ef30337fd02b
cheers
On Mon, 2019-01-14 at 00:40:27 UTC, Alexey Kardashevskiy wrote:
> This removes never used symbol - pnv_power9_force_smt4.
>
> Note that we might still want to add stubs for:
> void pnv_power9_force_smt4_catch(void);
> void pnv_power9_force_smt4_release(void);
>
> Fixes: 7672691a08c88
On Mon, 2019-01-14 at 00:41:38 UTC, Alexey Kardashevskiy wrote:
> TCE_KILL_INVAL_ALL has moved long ago but the comment was forgotted so
> finish the move and remove the comment.
>
> Fixes: 0bbcdb437da0c4a "powerpc/powernv/npu: TCE Kill helpers cleanup"
> Signed-off-by: Alexey Kardashevskiy
Appl
On Mon, 2019-01-14 at 20:13:04 UTC, Mathieu Malaterre wrote:
> GCC supports -mcpu=G4
>
> This patch gives the opportunity to select ALTIVEC for this variant.
>
> Signed-off-by: Mathieu Malaterre
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/9bd10b649826774bb5e1e7fb67544e65
On Fri, 2018-09-07 at 15:35:26 UTC, Igor Stoppa wrote:
> WARN_ON() already contains an unlikely(), so it's not necessary to
> wrap it into another.
>
> Signed-off-by: Igor Stoppa
> Cc: Arseny Solokha
> Cc: Benjamin Herrenschmidt
> Cc: Paul Mackerras
> Cc: Michael Ellerman
> Cc: linuxppc-dev@l
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