[PATCH] powerpc/imc-pmu: Revert nest_init_lock to being a mutex

The recent commit 76d588dddc45 ("powerpc/imc-pmu: Fix use of mutex in IRQs disabled section") fixed warnings (and possible deadlocks) in the IMC PMU driver by converting the locking to use spinlocks. It also converted the init-time nest_init_lock to a spinlock, even though it's not used at

[PATCH] powerpc/kexec_file: Fix division by zero in extra size estimation

In kexec_extra_fdt_size_ppc64() there's logic to estimate how much extra space will be needed in the device tree for some memory related properties. That logic uses the size of RAM divided by drmem_lmb_size() to do the estimation. However drmem_lmb_size() can be zero if the machine has no

Re: [PATCH v4 16/24] powerpc/pseries: Implement signed update for PLPKS objects

On Tue, 2023-01-24 at 14:16 +1000, Nicholas Piggin wrote: > > diff --git a/arch/powerpc/platforms/pseries/plpks.c > > b/arch/powerpc/platforms/pseries/plpks.c > > index 1189246b03dc..796ed5544ee5 100644 > > --- a/arch/powerpc/platforms/pseries/plpks.c > > +++

Re: [Skiboot] [PATCH V2 1/3] core/device: Add function to return child node using name at substring "@"

> On 18-Jan-2023, at 11:14 AM, Athira Rajeev > wrote: > > Add a function dt_find_by_name_substr() that returns the child node if > it matches till first occurence at "@" of a given name, otherwise NULL. > This is helpful for cases with node name like: "name@addr". In > scenarios where nodes

Re: [PATCH v2] powerpc: macio: Make remove callback of macio driver void returned

Dawei Li writes: > Commit fc7a6209d571 ("bus: Make remove callback return void") forces > bus_type::remove be void-returned, it doesn't make much sense for any > bus based driver implementing remove callbalk to return non-void to > its caller. > > This change is for macio bus based drivers. > >

Re: [PATCH] powerpc/kexec_file: account hot-pluggable memory while estimating FDT size

Sourabh Jain writes: > On Systems where online memory is lesser compared to max memory, the > kexec_file_load system call may fail to load the kdump kernel with the > below errors: > > "Failed to update fdt with linux,drconf-usable-memory property" > "Error setting up usable-memory

Re: [PATCH] powerpc/kexec_file: account hot-pluggable memory while estimating FDT size

On 30/01/23 08:34, Michael Ellerman wrote: Sourabh Jain writes: On Systems where online memory is lesser compared to max memory, the kexec_file_load system call may fail to load the kdump kernel with the below errors: "Failed to update fdt with linux,drconf-usable-memory property"

Re: [PATCH v2 4/4] mm, arch: add generic implementation of pfn_valid() for FLATMEM

Mike Rapoport writes: > From: "Mike Rapoport (IBM)" > > Every architecture that supports FLATMEM memory model defines its own > version of pfn_valid() that essentially compares a pfn to max_mapnr. > > Use mips/powerpc version implemented as static inline as a generic > implementation of

Re: [PATCH 00/35] Documentation: correct lots of spelling errors (series 1)

Hello: This series was applied to bpf/bpf-next.git (master) by Alexei Starovoitov : On Thu, 26 Jan 2023 22:39:30 -0800 you wrote: > Correct many spelling errors in Documentation/ as reported by codespell. > > Maintainers of specific kernel subsystems are only Cc-ed on their > respective

[PATCH v2 0/4] mm, arch: add generic implementation of pfn_valid() for FLATMEM

From: "Mike Rapoport (IBM)" Hi, Every architecture that supports FLATMEM memory model defines its own version of pfn_valid() that essentially compares a pfn to max_mapnr. Use mips/powerpc version implemented as static inline as a generic implementation of pfn_valid() and drop its

[PATCH v2 1/4] arm: include asm-generic/memory_model.h from page.h rather than memory.h

From: "Mike Rapoport (IBM)" Makes it consistent with other architectures and allows for generic definition of pfn_valid() in asm-generic/memory_model.h with clear override in arch/arm/include/asm/page.h Signed-off-by: Mike Rapoport (IBM) --- arch/arm/include/asm/memory.h | 2 --

[PATCH v2 2/4] m68k: use asm-generic/memory_model.h for both MMU and !MMU

From: "Mike Rapoport (IBM)" The MMU variant uses generic definitions of page_to_pfn() and pfn_to_page(), but !MMU defines them in include/asm/page_no.h for no good reason. Include asm-generic/memory_model.h in the common include/asm/page.h and drop redundant definitions. Signed-off-by: Mike

[PATCH v2 3/4] mips: drop definition of pfn_valid() for DISCONTIGMEM

From: "Mike Rapoport (IBM)" There is stale definition of pfn_valid() for DISCONTINGMEM memory model guarded !FLATMEM && !SPARSEMEM && NUMA ifdefery. Remove everything but definition of pfn_valid() for FLATMEM. Signed-off-by: Mike Rapoport (IBM) --- arch/mips/include/asm/page.h | 15

[PATCH v2 4/4] mm, arch: add generic implementation of pfn_valid() for FLATMEM

From: "Mike Rapoport (IBM)" Every architecture that supports FLATMEM memory model defines its own version of pfn_valid() that essentially compares a pfn to max_mapnr. Use mips/powerpc version implemented as static inline as a generic implementation of pfn_valid() and drop its per-architecture

Re: [PATCH v2] powerpc: macio: Make remove callback of macio driver void returned

On Sun, Jan 15, 2023 at 09:17:23PM +0800, Dawei Li wrote: > Commit fc7a6209d571 ("bus: Make remove callback return void") forces > bus_type::remove be void-returned, it doesn't make much sense for any > bus based driver implementing remove callbalk to return non-void to > its caller. > > This