This adds a chardev+ioctl-based interface for user space to access pseries
platform-specific functions which don't easily fit elsewhere.
The immediate motivation is to unbreak librtas[1] with kernel lockdown
enabled. librtas provides a thin root-only user-space API, allowing nearly
direct access
On 7/21/22 5:41 PM, Sean Anderson wrote:
> On 7/20/22 9:53 AM, Vladimir Oltean wrote:
>> On Tue, Jul 19, 2022 at 03:34:45PM -0400, Sean Anderson wrote:
>>> We could do it, but it'd be a pretty big hack. Something like the
>>> following. Phylink would need to be modified to grab the lock before
>>>
The pull request you sent on Fri, 29 Jul 2022 22:49:59 +1000:
> https://lore.kernel.org/amd-gfx/20220728203347.2019728-1-rodrigo.sique...@amd.com/
> cheers
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/9d928d9b78beec5d4b8afde9c144919b979685f2
Thank you!
--
Or better yet, try the patch that Rafael proposed. ;-)
Thanx, Paul
On Fri, Jul 29, 2022 at 08:26:22AM -0700, Paul E. McKenney wrote:
> On Fri, Jul 29, 2022 at 03:24:58AM -0700, Michel Lespinasse wrote:
> > On Thu, Jul 28, 2022 at
On Fri, Jul 29, 2022 at 03:24:58AM -0700, Michel Lespinasse wrote:
> On Thu, Jul 28, 2022 at 10:20:53AM -0700, Paul E. McKenney wrote:
> > On Mon, Jul 25, 2022 at 12:43:06PM -0700, Michel Lespinasse wrote:
> > > On Wed, Jun 08, 2022 at 04:27:27PM +0200, Peter Zijlstra wrote:
> > > > Commit
On Fri, Jul 29, 2022 at 12:25 PM Michel Lespinasse
wrote:
>
> On Thu, Jul 28, 2022 at 10:20:53AM -0700, Paul E. McKenney wrote:
> > On Mon, Jul 25, 2022 at 12:43:06PM -0700, Michel Lespinasse wrote:
> > > On Wed, Jun 08, 2022 at 04:27:27PM +0200, Peter Zijlstra wrote:
> > > > Commit c227233ad64c
On Thu, Jul 28, 2022 at 10:20:53AM -0700, Paul E. McKenney wrote:
> On Mon, Jul 25, 2022 at 12:43:06PM -0700, Michel Lespinasse wrote:
> > On Wed, Jun 08, 2022 at 04:27:27PM +0200, Peter Zijlstra wrote:
> > > Commit c227233ad64c ("intel_idle: enable interrupts before C1 on
> > > Xeons") wrecked
Michael Ellerman wrote:
> Sachin Sant writes:
> > Linux-next (5.19.0-rc8-next-20220728) fails to build on powerpc with
> > following error:
> >
> > ERROR: modpost: "memory_add_physaddr_to_nid" [drivers/cxl/cxl_pmem.ko]
> > undefined!
> > make[1]: *** [scripts/Makefile.modpost:128:
On Fri, Jul 29, 2022 at 7:17 AM Michael Ellerman
wrote:
>
> On Wed, 4 May 2022 20:08:22 +0200, Pali Rohár wrote:
> > DT law_trgt_if property defines Local Access Window Target Interface.
> >
> > Local Access Window Target Interface is used for identifying individual
> > peripheral and mapping its
On Fri, 1 Jul 2022 16:24:33 +0800, Xiu Jianfeng wrote:
> This patchset adds support for syscall stack randomization for
> powerpc, which can make harder the various stack-based attacks that
> rely on deterministic stack structure.
>
> Changes in v3:
> -add a lead-up patch to move
On Fri, 15 Jul 2022 11:52:50 +0800, Jason Wang wrote:
> The double `is' is duplicated in line 110, remove one.
>
>
Applied to powerpc/next.
[1/1] powerpc/sysdev: Fix comment typo
https://git.kernel.org/powerpc/c/738f9dca0df3bb630e6f06a19573ab4e31bd443a
cheers
On Mon, 18 Jul 2022 15:55:53 +0800, Jason Wang wrote:
> The double `the' in line 807 is duplicated, remove one.
>
>
Applied to powerpc/next.
[1/1] powerpc/pseries/vas: Fix comment typo
https://git.kernel.org/powerpc/c/901a30cf5f765a26f1308701d9df9e7f3d0023a5
cheers
On Sun, 12 Jun 2022 23:34:00 +0200, Uwe Kleine-König wrote:
> Returning an error code (here -EBUSY) from a remove callback doesn't
> prevent the driver from being unloaded. The only effect is that an error
> message is emitted and the driver is removed anyhow.
>
> So instead drop the remove
On Thu, 7 Jul 2022 08:14:39 +0200, Uwe Kleine-König wrote:
> By moving up pmc_types and pmc_match, the forward declaration for pmc_match
> can be dropped.
>
>
Applied to powerpc/next.
[1/3] powerpc/platforms/83xx/suspend: Reorder to get rid of a forward
declaration
On Wed, 13 Jul 2022 23:37:34 +0800, Ning Qiang wrote:
> In do_adb_query function of drivers/macintosh/adb.c, req->data is copy
> form userland. the parameter "req->data[2]" is Missing check, the
> array size of adb_handler[] is 16, so "adb_handler[
> req->data[2]].original_address" and
On Fri, 17 Jun 2022 14:39:35 +1000, Rashmica Gupta wrote:
> The ISA states: "when ACC[i] contains defined data, the contents of VSRs
> 4×i to 4×i+3 are undefined until either a VSX Move From ACC instruction
> is used to copy the contents of ACC[i] to VSRs 4×i to 4×i+3 or some other
> instruction
On Fri, 17 Jun 2022 14:31:35 +1000, Rashmica Gupta wrote:
> The comment being referred to was deleted in commit af1bbc3dd3d5 ("powerpc:
> Remove UP only lazy floating point and vector optimisations").
>
> Add a bit more detail so it's clear why we need to clear the FP/VEC/VSX
> bits here.
>
>
>
On Fri, 17 Jun 2022 14:28:05 +1000, Rashmica Gupta wrote:
> The facility unavailable exception is only available on ppc book3s
> machines so use CONFIG_PPC_BOOK3S_64 rather than CONFIG_PPC64.
> tm_unavailable is only called from facility_unavailable_exception so can
> also be under this Kconfig
On Wed, 6 Jul 2022 12:21:47 +0200, Pali Rohár wrote:
> Since commit 63a72284b159 ("powerpc/pci: Assign fixed PHB number based on
> device-tree properties"), powerpc kernel always fallback to PCI domain
> assignment from OF / Device Tree 'reg' property of the PCI controller.
>
> In most cases
On Wed, 6 Jul 2022 12:10:43 +0200, Pali Rohár wrote:
> By default old pre-3.0 Freescale PCIe controllers reports invalid PCI Class
> Code 0x0b20 for PCIe Root Port. It can be seen by lspci -b output on P2020
> board which has this pre-3.0 controller:
>
> $ lspci -bvnn
> 00:00.0 Power PC
On Wed, 13 Jul 2022 15:44:29 +0200, Pali Rohár wrote:
> CPLD firmware can reset board by writing value 0x01 at CPLD memory offset
> 0x0d. Define syscon-reboot node for this reset support.
>
>
Applied to powerpc/next.
[1/1] powerpc: dts: turris1x.dts: Add CPLD reboot node
On Wed, 4 May 2022 20:08:22 +0200, Pali Rohár wrote:
> DT law_trgt_if property defines Local Access Window Target Interface.
>
> Local Access Window Target Interface is used for identifying individual
> peripheral and mapping its memory to CPU. Interface id is defined by
> hardware itself.
>
>
On Sat, 9 Jul 2022 14:43:05 +0200, Pali Rohár wrote:
> More MPC85xx and P1/P2 boards options have incorrect description. Fix them
> to include list of all boards for which they enable/disable support.
>
>
Applied to powerpc/next.
[1/1] powerpc/85xx: Fix description of MPC85xx and P1/P2 boards
On Wed, 6 Jul 2022 12:43:03 +0200, Pali Rohár wrote:
> This patch series cleanup unused code by eliminating it at compile time
> and then enable usage of all 256 PCI buses per every PCI domain as
> currently PCI bus numbers have to be unique across all PCI domains.
> So first bus number of each
On Fri, 15 Jul 2022 11:26:36 +1000, Nicholas Piggin wrote:
> Take the arm64 HWCAP documentation file and adjust it for powerpc.
>
>
Applied to powerpc/next.
[1/1] powerpc: add documentation for HWCAPs
https://git.kernel.org/powerpc/c/ef1911c6d26678b0e91fea33f076e98925997f0c
cheers
On Fri, 20 May 2022 22:36:49 +1000, Nicholas Piggin wrote:
> Processors with coherent icache require the sequence sync ; icbi ; isync
> to entire store->execute coherency. icbi (to any address) must be
> executed to ensure isync flushes the pipeline. See "POWER9 Processor
> User's Manual, 4.6.2.2
On Mon, 11 Jul 2022 13:06:52 +1000, Nicholas Piggin wrote:
> cpu_to_node is not available (setup_arch() is called before
> setup_per_cpu_areas() by start_kernel()).
>
>
Patch 1 applied to powerpc/next.
[1/2] powerpc/mce: mce_init use early_cpu_to_node
On Wed, 25 May 2022 12:23:55 +1000, Nicholas Piggin wrote:
> POWER10 doesn't require the two Nest MMU workarounds according to the
> workbook. Also remove the last vestige of the spurious fault flushing
> for NMMU which shouldn't have been required anyway.
>
> Thanks,
> Nick
>
> [...]
Applied
On Sat, 23 Jul 2022 07:30:45 -0400, Nayna Jain wrote:
> PowerVM provides an isolated Platform KeyStore(PKS)[1] storage allocation
> for each partition(LPAR) with individually managed access controls to store
> sensitive information securely. The Linux Kernel can access this storage by
>
On Thu, 28 Jul 2022 00:32:17 +1000, Michael Ellerman wrote:
> On a bare-metal Power8 system that doesn't have an "ibm,power-rng", a
> malicious QEMU and guest that ignore the absence of the
> KVM_CAP_PPC_HWRNG flag, and calls H_RANDOM anyway, will dereference a
> NULL pointer.
>
> In practice all
On Wed, 29 Jun 2022 16:08:17 +1000, Michael Ellerman wrote:
> Christophe and Nick have been active in recent years on the mailing list
> and making contributions, add them as reviewers.
>
> Paul and Ben are no longer actively reviewing powerpc patches, remove
> them from the reviewers, they're
On Mon, 18 Jul 2022 19:51:58 +1000, Michael Ellerman wrote:
> Since commit 87c78b612f4f ("powerpc: Fix all occurences of "the the"")
> fixed "the the", there's now a steady stream of patches fixing other
> duplicate words.
>
> Just fix them all at once, to save the overhead of dealing with
>
On Tue, 28 Jun 2022 00:02:27 +1000, Michael Ellerman wrote:
> The PUSH/POP_BASIC_STACK helpers in basic_asm.h do not ensure that the
> stack pointer is always 16-byte aligned, which is required per the ABI.
>
> Fix the macros to do the alignment if the caller fails to.
>
> Currently only one
On Mon, 25 Jul 2022 10:56:19 +0900, Masahiro Yamada wrote:
> The .incbin assembler directive is much faster than bin2c + $(CC).
>
> Do similar refactoring as in commit 4c0f032d4963 ("s390/purgatory:
> Omit use of bin2c").
>
> Please note the .quad directive matches to size_t in C (both 8 byte)
>
On Wed, 13 Jul 2022 17:47:25 +0200, Laurent Dufour wrote:
> When a partition is transferred, once it arrives at the destination node,
> the partition is active but much of its memory must be transferred from the
> start node.
>
> It depends on the activity in the partition, but the more CPU the
On Fri, 10 Jun 2022 14:10:06 +0930, Joel Stanley wrote:
> When booting on a machine that uses the compat pmu driver we see this:
>
> [0.071192] GENERIC_COMPAT performance monitor hardware support registered
>
> Which is a bit shouty. Give it a nicer name.
>
>
> [...]
Applied to
On Thu, 30 Jun 2022 12:19:42 +0530, Hari Bathini wrote:
> During kdump, two set of NMI IPIs are sent to secondary CPUs, if
> 'crash_kexec_post_notifiers' option is set. The first set of NMI IPIs
> to stop the CPUs and the other set to collect register data. Instead,
> capture register data for
On Thu, 7 Jul 2022 16:37:17 +0200, Christophe Leroy wrote:
> From: Rashmica Gupta
>
> Currently the perf CPU backend drivers detect what CPU they're on using
> cur_cpu_spec->oprofile_cpu_type.
>
> Although that works, it's a bit crufty to be using oprofile related fields,
> especially seeing as
On Fri, 8 Jul 2022 09:11:05 +0200, Christophe Leroy wrote:
> A lot of drivers were getting platform and of headers
> indirectly via headers like asm/pci.h or asm/prom.h
>
> Most of them were fixed during 5.19 cycle but a newissue was
> introduced by commit 52b1b46c39ae ("of: Create platform
On Mon, 11 Jul 2022 16:19:29 +0200, Christophe Leroy wrote:
> Commit 0e00a8c9fd92 ("powerpc: Allow CPU selection also on PPC32")
> enlarged the CPU selection logic to PPC32 by removing depend to
> PPC64, and failed to restrict that depend to E5500_CPU and E6500_CPU.
> Fortunately that got
On Fri, 1 Jul 2022 08:06:15 +0200, Christophe Leroy wrote:
> Since commit 4291d085b0b0 ("powerpc/32s: Make pte_update() non
> atomic on 603 core"), pte_update() has been using
> mmu_has_feature(MMU_FTR_HPTE_TABLE) to avoid a useless atomic
> operation on 603 cores.
>
> When kasan_early_init()
On Thu, 7 Jul 2022 16:55:14 +0200, Christophe Leroy wrote:
> ppc_opcode_t is just an u32. There is no point in hiding u32
> behind such a typedef. Remove it.
>
>
Applied to powerpc/next.
[1/3] powerpc/probes: Remove ppc_opcode_t
On Tue, 14 Jun 2022 12:34:08 +0200, Christophe Leroy wrote:
> mark_initmem_nx() calls either mmu_mark_initmem_nx() or
> set_memory_attr() based on return from v_block_mapped()
> of _sinittext.
>
> But we can now handle text and data independently, so that
> text may be mapped by block even when
On Wed, 13 Jul 2022 15:23:31 -0500, Scott Cheloha wrote:
> PAPR v2.12 defines a new hypercall, H_WATCHDOG. This patch series
> adds support for this hypercall to powerpc/pseries kernels and
> introduces a new watchdog driver, "pseries-wdt", for the virtual
> timers exposed by the hypercall.
>
>
On Thu, 14 Jul 2022 18:11:19 +1000, Alexey Kardashevskiy wrote:
> The existing iommu_table_in_use() helper checks if the kernel is using
> any of TCEs. There are some reserved TCEs:
> 1) the very first one if DMA window starts from 0 to avoid having a zero
> but still valid DMA handle;
> 2)
On Thu, 28 Jul 2022 10:33:30 +0700, Bagas Sanjaya wrote:
> After merging powerpc tree for linux-next integration testing, Stephen
> Rothwell reported htmldocs warnings at [1]. Fix these with self-explanatory
> fixes in the shortlog below.
>
> [1]:
>
On Wed, 29 Jun 2022 16:06:14 +1000, Alexey Kardashevskiy wrote:
> The pseries platform uses 32bit default DMA window (always 4K pages) and
> optional 64bit DMA window available via DDW ("Dynamic DMA Windows"),
> 64K or 2M pages. For ages the default one was not removed and a huge
> window was
On Fri, 20 May 2022 14:16:29 +0530, Athira Rajeev wrote:
> Add caps support under "/sys/bus/event_source/devices//"
> for powerpc. This directory can be used to expose some of the
> specific features that powerpc PMU supports to the user.
> Example: pmu_name. The name of PMU registered will depend
On Thu, 14 Jul 2022 18:08:00 +1000, Alexey Kardashevskiy wrote:
> The iommu_table::it_index is a LIOBN which is not initialized on PowerNV
> as it is not used except IOMMU debugfs where it is used for a node name.
>
> This initializes it_index witn a unique number to avoid warnings and
> have a
> -Original Message-
> From: Sean Anderson
> Sent: Monday, July 25, 2022 18:10
> To: David S . Miller ; Eric Dumazet
> ; Jakub Kicinski ; Paolo Abeni
> ; net...@vger.kernel.org
> Cc: linuxppc-dev@lists.ozlabs.org; Camelia Alexandra Groza
> ; open list ;
> Madalin Bucur ; linux-arm-
>
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hi Linus,
Please pull two more powerpc fixes for 5.19.
Notably the re-enablement of the new amdgpu display engine, which was
previously causing
build errors.
Restricting it to compilers using 128-bit long double seems to have fixed the
build
On Fri, Jul 29, 2022 at 04:24:36AM +, Tian, Kevin wrote:
> > It is a POWER specific thing with one not-so-obvious consequence of each
> > window having an independent page size (fixed at the moment or creation)
> > and (most likely) different page size, like, 4K vs. 2M.
>
> page size is
> From 8ca5b098b6ff1048953be748dbffc987996e2605 Mon Sep 17 00:00:00 2001
> From: Michael Ellerman
> Date: Fri, 29 Jul 2022 16:13:55 +1000
> Subject: [PATCH] powerpc/mm: Export memory_add_physaddr_to_nid() for modules
>
> The cxl_pmem module wants to call memory_add_physaddr_to_nid(), so
>
https://bugzilla.kernel.org/show_bug.cgi?id=215285
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|RESOLVED|CLOSED
--
https://bugzilla.kernel.org/show_bug.cgi?id=215285
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|NEW |RESOLVED
https://bugzilla.kernel.org/show_bug.cgi?id=216183
--- Comment #9 from Michael Ellerman (mich...@ellerman.id.au) ---
I can't make sense of that bisection result. I'm not saying it's wrong, but I
can't see how that commit can cause this bug.
--
You may reply to this email to add a comment.
You
https://bugzilla.kernel.org/show_bug.cgi?id=206669
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|NEEDINFO|ASSIGNED
--
https://bugzilla.kernel.org/show_bug.cgi?id=213079
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|NEW |NEEDINFO
https://bugzilla.kernel.org/show_bug.cgi?id=216090
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|RESOLVED|CLOSED
--
https://bugzilla.kernel.org/show_bug.cgi?id=216090
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
CC|
Miaoqian Lin writes:
> of_find_node_by_path() returns remote device nodepointer with
> refcount incremented, we should use of_node_put() on it when done.
> Add missing of_node_put() to avoid refcount leak.
>
> Fixes: 3038acf9091f ("powerpc/85xx: Add platform support for X-ES MPC85xx
> boards")
>
Sachin Sant writes:
> Linux-next (5.19.0-rc8-next-20220728) fails to build on powerpc with
> following error:
>
> ERROR: modpost: "memory_add_physaddr_to_nid" [drivers/cxl/cxl_pmem.ko]
> undefined!
> make[1]: *** [scripts/Makefile.modpost:128: modules-only.symvers] Error 1
>
> The code in
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