To check machine check handling, add support to inject slb
multihit errors.
Cc: Kees Cook
Cc: Michal Suchánek
Co-developed-by: Mahesh Salgaonkar
Signed-off-by: Mahesh Salgaonkar
Signed-off-by: Ganesh Goudar
---
v5:
- Insert entries at SLB_NUM_BOLTED and SLB_NUM_BOLTED +1, remove index
alloc
The R9A06G032 clock driver uses an array of packed structures to reduce
kernel size. However, this array contains pointers, which are no longer
aligned naturally, and cannot be relocated on PPC64. Hence when
compile-testing this driver on PPC64 with CONFIG_RELOCATABLE=y (e.g.
PowerPC allyesconfig
The R9A06G032 clock driver uses an array of packed structures to reduce
kernel size. However, this array contains pointers, which are no longer
aligned naturally, and cannot be relocated on PPC64. Hence when
compile-testing this driver on PPC64 with CONFIG_RELOCATABLE=y (e.g.
PowerPC allyesconfig
Hi Stephen,
On Sat, Nov 28, 2020 at 2:28 AM Stephen Rothwell wrote:
> There are 2 drivers that have arrays of packed structures that contain
> pointers that end up at unaligned offsets. These produce warnings in
> the PowerPC allyesconfig build like this:
>
> WARNING: 148 bad relocations
> c
On Sun, 29 Nov 2020, Andrew Lunn wrote:
> On Thu, Nov 26, 2020 at 01:38:53PM +, Lee Jones wrote:
> > Fixes the following W=1 kernel build warning(s):
> >
> > from drivers/net/ethernet/ibm/ibmvnic.c:35:
> > inlined from ‘handle_vpd_rsp’ at drivers/net/ethernet/ibm/ibmvnic.c:4124:3:
> > driv
On Sun, 29 Nov 2020, Andrew Lunn wrote:
> Hi Lee
>
> > /**
> > * build_hdr_data - creates L2/L3/L4 header data buffer
> > - * @hdr_field - bitfield determining needed headers
> > - * @skb - socket buffer
> > - * @hdr_len - array of header lengths
> > - * @tot_len - total length of data
> > + *
From: Krzysztof Wilczynski
> Sent: 29 November 2020 23:08
>
> Use "void __iomem" instead "char __iomem" pointer type when working with
> the accessor functions (with names like readb() or writel(), etc.) to
> better match a given accessor function signature where commonly the
> address pointing to
On Sun, Nov 29, 2020 at 12:16:26PM -0800, Andy Lutomirski wrote:
> On Sat, Nov 28, 2020 at 7:54 PM Andy Lutomirski wrote:
> >
> > On Sat, Nov 28, 2020 at 8:02 AM Nicholas Piggin wrote:
> > >
> > > On big systems, the mm refcount can become highly contented when doing
> > > a lot of context switch
On Sat, Nov 28, 2020 at 07:54:57PM -0800, Andy Lutomirski wrote:
> Version (b) seems fairly straightforward to implement -- add RCU
> protection and a atomic_t special_ref_cleared (initially 0) to struct
> mm_struct itself. After anyone clears a bit to mm_cpumask (which is
> already a barrier),
N
On Sat, Nov 28, 2020 at 07:54:57PM -0800, Andy Lutomirski wrote:
> This means that mm_cpumask operations won't need to be full barriers
> forever, and we might not want to take the implied full barriers in
> set_bit() and clear_bit() for granted.
There is no implied full barrier for those ops.
On Mon, Nov 30, 2020 at 10:30:00AM +0100, Peter Zijlstra wrote:
> On Sat, Nov 28, 2020 at 07:54:57PM -0800, Andy Lutomirski wrote:
> > This means that mm_cpumask operations won't need to be full barriers
> > forever, and we might not want to take the implied full barriers in
> > set_bit() and clear
Hi Geert,
On Mon, 30 Nov 2020 09:58:23 +0100 Geert Uytterhoeven
wrote:
>
> Thanks for your patch!
No worries, it has been a small irritant to me for quite a while.
> I prefer to fix this in the driver instead. The space saving by packing the
> structure is minimal.
> I've sent a patch
> https
On Sun, Nov 29, 2020 at 11:07:39PM +, Krzysztof Wilczyński wrote:
> Add ECAM-related constants to provide a set of standard constants
> defining memory address shift values to the byte-level address that can
> be used to access the PCI Express Configuration Space, and then move
> native PCI Exp
Commit 062cfab7069f ("KVM: PPC: Book3S HV: XIVE: Make VP block size
configurable") updated kvmppc_xive_vcpu_id_valid() in a way that
allows userspace to trigger an assertion in skiboot and crash the host:
[ 696.186248988,3] XIVE[ IC 08 ] eq_blk != vp_blk (0 vs. 1) for target
0x438c/0
[ 696
On 11/30/20 1:19 PM, Greg Kurz wrote:
> Commit 062cfab7069f ("KVM: PPC: Book3S HV: XIVE: Make VP block size
> configurable") updated kvmppc_xive_vcpu_id_valid() in a way that
> allows userspace to trigger an assertion in skiboot and crash the host:
>
> [ 696.186248988,3] XIVE[ IC 08 ] eq_blk !=
- On Nov 28, 2020, at 11:01 AM, Nicholas Piggin npig...@gmail.com wrote:
> And get rid of the generic sync_core_before_usermode facility. This is
> functionally a no-op in the core scheduler code, but it also catches
This sentence is incomplete.
>
> This helper is the wrong way around I thi
Update bus speed definition for PCI Gen4 and 5.
Signed-off-by: Frederic Barrat
---
arch/powerpc/platforms/pseries/pci.c | 51
1 file changed, 21 insertions(+), 30 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/pci.c
b/arch/powerpc/platforms/pseries/pci.c
Hi Lorenzo!
On 20-11-30 11:08:58, Lorenzo Pieralisi wrote:
[...]
> > Refactor pci_ecam_map_bus() function to use newly added constants so
> > that limits to the bus, device function and offset (now limited to 4K as
> > per the specification) are in place to prevent the defective or
> > malicious c
Hi Jon,
This series got already submitted last year:
https://lore.kernel.org/lkml/cover.1561222784.git.mchehab+sams...@kernel.org/
Yet, on that time, there were too many other patches related to ReST
conversion floating around. So, at the end, I guess this one got missed.
So, I did a rebase
Add a feature list matrix for each architecture to their
respective Kernel books.
Signed-off-by: Mauro Carvalho Chehab
---
Documentation/arm/features.rst | 3 +++
Documentation/arm/index.rst | 2 ++
Documentation/arm64/features.rst| 3 +++
Documentation/arm64/index.rst
On Wed, Nov 25, 2020 at 1:32 AM Serge Semin
wrote:
>
> On Sat, Nov 21, 2020 at 06:42:28AM -0600, Rob Herring wrote:
> > On Thu, Nov 12, 2020 at 01:29:46PM +0300, Serge Semin wrote:
> > > On Wed, Nov 11, 2020 at 02:14:23PM -0600, Rob Herring wrote:
> > > > On Wed, Nov 11, 2020 at 12:08:45PM +0300,
[+CC David for visibility]
Hi Bjorn,
Thank you for the review!
On 20-11-28 12:35:16, Bjorn Helgaas wrote:
[...]
> It's ironic that we don't use PCIE_ECAM_OFFSET in drivers/pci/ecam.c.
> We could do something like this, which would also let us drop
> .bus_shift completely in all the conforming im
On 30/11/2020 15:21:33+, Andrey Zhizhikin wrote:
> Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") removed geenric_bl driver from the tree, together with
> corresponding config option.
>
> Remove BACKLIGHT_GENERIC config item from all ARM configurations.
>
On Mon, 23 Nov 2020 11:00:35 +0200, Laurentiu Tudor wrote:
> From: Ionut-robert Aron
>
> Convert fsl,qoriq-mc to YAML in order to automate the verification
> process of dts files. In addition, update MAINTAINERS accordingly
> and, while at it, add some missing files.
>
> Signed-off-by: Ionut-rob
On Mon, Nov 30, 2020 at 09:06:56AM +, David Laight wrote:
> From: Krzysztof Wilczynski
> > Sent: 29 November 2020 23:08
> >
> > Use "void __iomem" instead "char __iomem" pointer type when working with
> > the accessor functions (with names like readb() or writel(), etc.) to
> > better match a
On 11/27/20 9:45 AM, Brian King wrote:
> On 11/25/20 7:48 PM, Tyrel Datwyler wrote:
>> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
>> index 9d58cfd774d3..8225bdbb127e 100644
>> --- a/drivers/scsi/ibmvscsi/ibmvfc.h
>> +++ b/drivers/scsi/ibmvscsi/ibmvfc.h
>> @@ -41,6
On 11/27/20 9:46 AM, Brian King wrote:
> On 11/25/20 7:48 PM, Tyrel Datwyler wrote:
>> Allocate a set of Sub-CRQs in advance. During channel setup the client
>> and VIOS negotiate the number of queues the VIOS supports and the number
>> that the client desires to request. Its possible that the fina
On 11/27/20 9:47 AM, Brian King wrote:
> On 11/25/20 7:48 PM, Tyrel Datwyler wrote:
>> The logic for iterating over the Sub-CRQ responses is similiar to that
>> of the primary CRQ. Add the necessary handlers for processing those
>> responses.
>>
>> Signed-off-by: Tyrel Datwyler
>> ---
>> drivers/
On 11/27/20 9:49 AM, Brian King wrote:
> On 11/25/20 7:48 PM, Tyrel Datwyler wrote:
>> --- a/drivers/scsi/ibmvscsi/ibmvfc.c
>> +++ b/drivers/scsi/ibmvscsi/ibmvfc.c
>
>> @@ -4462,6 +4464,118 @@ static void ibmvfc_discover_targets(struct
>> ibmvfc_host *vhost)
>> ibmvfc_link_down(vhost
On Mon, 2020-11-30 at 11:20 -0600, Bjorn Helgaas wrote:
> On Mon, Nov 30, 2020 at 09:06:56AM +, David Laight wrote:
> > From: Krzysztof Wilczynski
> > > Sent: 29 November 2020 23:08
> > >
> > > Use "void __iomem" instead "char __iomem" pointer type when working with
> > > the accessor function
On Sun, 2020-11-29 at 23:07 +, Krzysztof Wilczyński wrote:
> Add ECAM-related constants to provide a set of standard constants
> defining memory address shift values to the byte-level address that can
> be used to access the PCI Express Configuration Space, and then move
> native PCI Express co
other arch folk: there's some background here:
https://lkml.kernel.org/r/calcetrvxube8lfnn-qs+dzroqaiw+sfug1j047ybyv31sat...@mail.gmail.com
On Sun, Nov 29, 2020 at 12:16 PM Andy Lutomirski wrote:
>
> On Sat, Nov 28, 2020 at 7:54 PM Andy Lutomirski wrote:
> >
> > On Sat, Nov 28, 2020 at 8:02 AM
On Mon, Nov 30, 2020 at 03:21:33PM +, Andrey Zhizhikin wrote:
> Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") removed geenric_bl driver from the tree, together with
> corresponding config option.
>
> Remove BACKLIGHT_GENERIC config item from all ARM config
On Mon, Nov 30, 2020 at 03:21:34PM +, Andrey Zhizhikin wrote:
> Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") removed geenric_bl driver from the tree, together with
> corresponding config option.
>
> Remove BACKLIGHT_GENERIC config item from arm64 configur
On Mon, Nov 30, 2020 at 03:21:35PM +, Andrey Zhizhikin wrote:
> Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") removed geenric_bl driver from the tree, together with
> corresponding config option.
>
> Remove BACKLIGHT_GENERIC config item from all MIPS confi
On Mon, Nov 30, 2020 at 03:21:36PM +, Andrey Zhizhikin wrote:
> Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") removed geenric_bl driver from the tree, together with
> corresponding config option.
>
> Remove BACKLIGHT_GENERIC config item from generic-64bit_
On Mon, Nov 30, 2020 at 03:21:37PM +, Andrey Zhizhikin wrote:
> Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") removed geenric_bl driver from the tree, together with
> corresponding config option.
>
> Remove BACKLIGHT_GENERIC config item from generic-64bit_
Ensure that received Subordinate Command-Response Queue (SCRQ)
entries are properly read in order by the driver. These queues
are used in the ibmvnic device to process RX buffer and TX completion
descriptors. dma_rmb barriers have been added after checking for a
pending descriptor to ensure the cor
This series resolves a few issues in the ibmvnic driver's
RX buffer and TX completion processing. The first patch
includes memory barriers to synchronize queue descriptor
reads. The second patch fixes a memory leak that could
occur if the device returns a TX completion with an error
code in the des
TX completions received with an error return code are not
being processed properly. When an error code is seen, do not
proceed to the next completion before cleaning up the existing
entry's data structures.
Fixes: 032c5e828 ("Driver for IBM System i/p VNIC protocol")
Signed-off-by: Thomas Falcon
On Mon, Nov 30, 2020 at 03:21:32PM +, Andrey Zhizhikin wrote:
> Since the removal of generic_bl driver from the source tree in commit
> 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") BACKLIGHT_GENERIC config option became obsolete as well and
> therefore subject to
On Sun, 2020-11-29 at 01:25 +1000, Nicholas Piggin wrote:
> Support huge page vmalloc mappings. Config option
> HAVE_ARCH_HUGE_VMALLOC
> enables support on architectures that define HAVE_ARCH_HUGE_VMAP and
> supports PMD sized vmap mappings.
>
> vmalloc will attempt to allocate PMD-sized pages if
On Mon, Nov 30, 2020 at 08:11:33PM +0100, Sam Ravnborg wrote:
> On Mon, Nov 30, 2020 at 03:21:32PM +, Andrey Zhizhikin wrote:
> > Since the removal of generic_bl driver from the source tree in commit
> > 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> > unused") BACKLIGHT_GE
The nvdimm devices are expected to ensure write persistent during power
failure kind of scenarios.
The libpmem has architecture specific instructions like dcbf on power
to flush the cache data to backend nvdimm device during normal writes.
Qemu - virtual nvdimm devices are memory mapped. The dcbf
The patch adds support for async hcalls at the DRC level for the
spapr devices. To be used by spapr-scm devices in the patch/es to follow.
Signed-off-by: Shivaprasad G Bhat
---
hw/ppc/spapr_drc.c | 149
include/hw/ppc/spapr_drc.h | 25 +
When the persistent memory beacked by a file, a cpu cache flush instruction
is not sufficient to ensure the stores are correctly flushed to the media.
The patch implements the async hcalls for flush operation on demand from the
guest kernel.
The device option sync-dax is by default off and enable
Since the removal of generic_bl driver from the source tree in commit
7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
unused") BACKLIGHT_GENERIC config option became obsolete as well and
therefore subject to clean-up from all configuration files.
This series introduces patches to
Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
unused") removed geenric_bl driver from the tree, together with
corresponding config option.
Remove BACKLIGHT_GENERIC config item from arm64 configuration.
Fixes: 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as i
Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
unused") removed geenric_bl driver from the tree, together with
corresponding config option.
Remove BACKLIGHT_GENERIC config item from all MIPS configurations.
Fixes: 7ecdea4a0226 ("backlight: generic_bl: Remove this driver
Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
unused") removed geenric_bl driver from the tree, together with
corresponding config option.
Remove BACKLIGHT_GENERIC config item from generic-64bit_defconfig.
Fixes: 7ecdea4a0226 ("backlight: generic_bl: Remove this driver
Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
unused") removed geenric_bl driver from the tree, together with
corresponding config option.
Remove BACKLIGHT_GENERIC config item from all ARM configurations.
Fixes: 7ecdea4a0226 ("backlight: generic_bl: Remove this driver a
Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
unused") removed geenric_bl driver from the tree, together with
corresponding config option.
Remove BACKLIGHT_GENERIC config item from generic-64bit_defconfig.
Fixes: 7ecdea4a0226 ("backlight: generic_bl: Remove this driver
Hello Krzysztof,
> -Original Message-
> From: Krzysztof Kozlowski
> Sent: Monday, November 30, 2020 7:52 PM
> To: ZHIZHIKIN Andrey
> Cc: li...@armlinux.org.uk; nicolas.fe...@microchip.com;
> alexandre.bell...@bootlin.com; ludovic.desroc...@microchip.com;
> t...@atomide.com; mrip...@kerne
Hello Sam,
> -Original Message-
> From: Sam Ravnborg
> Sent: Monday, November 30, 2020 8:12 PM
> To: ZHIZHIKIN Andrey
> Cc: li...@armlinux.org.uk; nicolas.fe...@microchip.com;
> alexandre.bell...@bootlin.com; ludovic.desroc...@microchip.com;
> t...@atomide.com; mrip...@kernel.org; w...@c
Hi Krzysztof,
On Mon, Nov 30, 2020 at 10:25:01PM +0200, Krzysztof Kozlowski wrote:
> On Mon, Nov 30, 2020 at 08:11:33PM +0100, Sam Ravnborg wrote:
> > On Mon, Nov 30, 2020 at 03:21:32PM +, Andrey Zhizhikin wrote:
> > > Since the removal of generic_bl driver from the source tree in commit
> > >
Alexey,
On Tue, Nov 24 2020 at 17:17, Alexey Kardashevskiy wrote:
> There are 10 users of __irq_domain_alloc_irqs() and only one - IOAPIC -
> passes realloc==true. There is no obvious reason for handling this
> specific case in the generic code.
There is also no obvious reason for _NOT_ handling
On Mon, 2020-11-30 at 12:21 -0800, Rick Edgecombe wrote:
> another option could be to use the changes here:
> https://lore.kernel.org/lkml/20201125092208.12544-4-r...@kernel.org/
> to reset the direct map for a large page range at a time for large
> vmalloc pages.
Oops, sorry. This wouldn't be so
Hi Geert,
On Mon, 30 Nov 2020 09:57:43 +0100 Geert Uytterhoeven
wrote:
>
> The R9A06G032 clock driver uses an array of packed structures to reduce
> kernel size. However, this array contains pointers, which are no longer
> aligned naturally, and cannot be relocated on PPC64. Hence when
> compi
Alexey,
On Tue, Nov 24 2020 at 17:17, Alexey Kardashevskiy wrote:
> We want to make the irq_desc.kobj's release hook free associated resources
> but we do not want to pollute the irqdesc code with domains.
Can you please describe your changelog in factual ways without 'we and I
and want'? See Doc
On Mon, Nov 30 2020 at 23:18, Thomas Gleixner wrote:
> On Tue, Nov 24 2020 at 17:17, Alexey Kardashevskiy wrote:
>> We want to make the irq_desc.kobj's release hook free associated resources
>> but we do not want to pollute the irqdesc code with domains.
>
> Can you please describe your changelog i
Alexey,
On Tue, Nov 24 2020 at 17:17, Alexey Kardashevskiy wrote:
> This moves hierarchical domain's irqs cleanup into the kobject release
> hook to make irq_domain_free_irqs() as simple as kobject_put.
Truly simple: Simply broken in multiple ways.
CONFIG_SPARSE_IRQ=n is now completely buggered.
Andrey Zhizhikin writes:
> Commit 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> unused") removed geenric_bl driver from the tree, together with
> corresponding config option.
>
> Remove BACKLIGHT_GENERIC config item from generic-64bit_defconfig.
This enables GENERIC_BUG_RELATIVE_POINTERS on Power so that 32-bit
offsets are stored in the bug entries rather than 64-bit pointers.
While this doesn't save space for 32-bit machines, use it anyway so
there is only one code path.
Signed-off-by: Jordan Niethe
---
v2: Remove non-relative pointers
On Mon, 30 Nov 2020 13:07:22 -0600 Thomas Falcon wrote:
> This series resolves a few issues in the ibmvnic driver's
> RX buffer and TX completion processing. The first patch
> includes memory barriers to synchronize queue descriptor
> reads. The second patch fixes a memory leak that could
> occur i
On Thu, 26 Nov 2020 23:38:38 +0530
"Naveen N. Rao" wrote:
> On powerpc, kprobe-direct.tc triggered FTRACE_WARN_ON() in
> ftrace_get_addr_new() followed by the below message:
> Bad trampoline accounting at: 4222522f (wake_up_process+0xc/0x20)
> (f001)
>
> The set of steps leading t
On Thu, 26 Nov 2020 23:38:39 +0530
"Naveen N. Rao" wrote:
> DYNAMIC_FTRACE_WITH_DIRECT_CALLS should depend on
> DYNAMIC_FTRACE_WITH_REGS since we need ftrace_regs_caller().
>
> Fixes: 763e34e74bb7d5c ("ftrace: Add register_ftrace_direct()")
> Signed-off-by: Naveen N. Rao
I'm pulling this in fo
On Thu, 26 Nov 2020 23:38:40 +0530
"Naveen N. Rao" wrote:
> We need to remove hash entry if register_ftrace_function() fails.
> Consolidate the cleanup to be done after register_ftrace_function() at
> the end.
Reviewed-by: Steven Rostedt (VMware)
-- Steve
>
> Signed-off-by: Naveen N. Rao
>
"Aneesh Kumar K.V" writes:
> This patch series implements KUAP and KUEP with hash translation mode using
> memory keys. The kernel now uses memory protection key 3 to control access
> to the kernel. Kernel page table entries are now configured with key 3.
> Access to locations configured with any
ig
powerpc allmodconfig
powerpc allnoconfig
i386 randconfig-a004-20201130
i386 randconfig-a002-20201130
i386 randconfig-a003-20201130
i386 randconfig-a005-20201130
i386 randconfig-a00
defconfig
mips allmodconfig
powerpc allyesconfig
powerpc allmodconfig
powerpc allnoconfig
i386 randconfig-a004-20201130
i386 randconfig-a002-20201130
i386
Christophe Leroy [christophe.le...@csgroup.eu] wrote:
> Hi,
>
> Le 19/11/2020 à 11:58, Will Springer a écrit :
> > I learned about the POWER9 gzip accelerator a few months ago when the
> > support hit upstream Linux 5.8. However, for some reason the Kconfig
> > dictates that VAS depends on a 64k
Le 01/12/2020 à 01:52, Jordan Niethe a écrit :
This enables GENERIC_BUG_RELATIVE_POINTERS on Power so that 32-bit
offsets are stored in the bug entries rather than 64-bit pointers.
While this doesn't save space for 32-bit machines, use it anyway so
there is only one code path.
Signed-off-by:
From: Oliver O'Halloran
When a passthrough IO adapter is removed from a pseries machine using hash
MMU and the XIVE interrupt mode, the POWER hypervisor expects the guest OS
to clear all page table entries related to the adapter. If some are still
present, the RTAS call which isolates the PCI slo
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