On Wed, 2019-08-14 at 10:02:20 UTC, Christophe Leroy wrote:
> When KASAN is selected, the definitive hash table has to be
> set up later, but there is already an early temporary one.
>
> When KASAN is not selected, there is no early hash table,
> so the setup of the definitive hash table cannot be
On Fri, 2019-06-28 at 15:55:52 UTC, Christophe Leroy wrote:
> On 8xx, breakpoints stop after executing the instruction, so
> stepping/emulation is not needed. Move it into a sub-function and
> remove the #ifdefs.
>
> Signed-off-by: Christophe Leroy
> Reviewed-by: Ravi Bangoria
Applied to powerp
On Wed, 2019-05-15 at 07:45:52 UTC, "Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy"
>
> The calls to arch_add_memory()/arch_remove_memory() are always made
> with the read-side cpu_hotplug_lock acquired via
> memory_hotplug_begin(). On pSeries,
> arch_add_memory()/arch_remove_memory() eve
an be reproduced by running 'test_cgroup_storage' with
> bpf_jit_harden=2.
>
> Fix this by emitting BPF_ZEXT during constant blinding if
> prog->aux->verifier_zext is set.
>
> Fixes: a4b1d3c1ddf6cb ("bpf: verifier: insert zero extension according to
> analysis res
Christophe Leroy writes:
> Hi Nick,
>
>
> Le 07/06/2018 à 03:43, Nicholas Piggin a écrit :
>> On Wed, 6 Jun 2018 14:21:08 + (UTC)
>> Christophe Leroy wrote:
>>
>>> scaled cputime is only meaningfull when the processor has
>>> SPURR and/or PURR, which means only on PPC64.
>>>
>
> [...]
>
>>
Will Deacon writes:
> Hi Michael,
>
> On Fri, Aug 16, 2019 at 02:52:40PM +1000, Michael Ellerman wrote:
>> Will Deacon writes:
>> > Although Alpha, Itanic and PowerPC all override NM, only PowerPC does it
>> > conditionally so I agree with you that passing &#
loop.
Debugged-by: Peter Collingbourne
Signed-off-by: Michael Ellerman
---
arch/powerpc/Makefile | 2 --
1 file changed, 2 deletions(-)
See the original discussion here:
https://lore.kernel.org/lkml/camn1go6p_vfdrjgzb67zs4kh0wjteqi0cbokmibtokhqogp...@mail.gmail.com/
diff --git a/arch
Nicholas Piggin writes:
> Christophe Leroy's on August 14, 2019 6:11 am:
>> Until vmalloc system is up and running, ioremap basically
>> allocates addresses at the border of the IOREMAP area.
>>
>> On PPC32, addresses are allocated down from the top of the area
>> while on PPC64, addresses are al
Christophe Leroy writes:
> diff --git a/arch/powerpc/mm/ioremap.c b/arch/powerpc/mm/ioremap.c
> index 57d742509cec..889ee656cf64 100644
> --- a/arch/powerpc/mm/ioremap.c
> +++ b/arch/powerpc/mm/ioremap.c
> @@ -103,3 +103,46 @@ void iounmap(volatile void __iomem *token)
> vunmap(addr);
> }
Christophe Leroy writes:
> diff --git a/arch/powerpc/mm/ioremap.c b/arch/powerpc/mm/ioremap.c
> index 0c23660522ca..57d742509cec 100644
> --- a/arch/powerpc/mm/ioremap.c
> +++ b/arch/powerpc/mm/ioremap.c
> @@ -72,3 +75,31 @@ void __iomem *ioremap_prot(phys_addr_t addr, unsigned long
> size, unsig
Christophe Leroy writes:
> CC kernel/futex.o
> kernel/futex.c: In function 'do_futex':
> kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this
> function [-Wmaybe-uninitialized]
>return oldval == cmparg;
> ^
> kernel/futex.c:1651:6: note: 'oldval'
Will Deacon writes:
> On Tue, Aug 06, 2019 at 07:34:36PM -0700, Peter Collingbourne wrote:
>> On Tue, Aug 6, 2019 at 4:50 PM Stephen Rothwell
>> wrote:
>> > After merging the arm64 tree, today's linux-next build (powerpc
>> > ppc64_defconfig) was just spinning in make - it executing some scripts
D'Silva
>> ---
>> arch/powerpc/kernel/misc_64.S | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
Acked-by: Michael Ellerman
>
>
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree. Please read:
> https://w
Thiago Jung Bauermann writes:
> Michael Ellerman writes:
>> Thiago Jung Bauermann writes:
>>> From: Ryan Grimm
>>> User space might want to know it's running in a secure VM. It can't do
>>> a mfmsr because mfmsr is a privileged instruction
Thiago Jung Bauermann writes:
> Michael Ellerman writes:
>> Thiago Jung Bauermann writes:
>>> From: Anshuman Khandual
>>>
>>> LPPACA structures need to be shared with the host. Hence they need to be in
>>> shared memory. Instead of allocatin
On Thu, 2019-08-08 at 12:48:26 UTC, Christophe Leroy wrote:
> Santa commit ebb9d30a6a74 ("powerpc/mm: any thread in one core can be
> the first to setup TLB1") removed the need to know the cpu_id in
> early_init_this_mmu(), but the call to smp_processor_id() which was
> marked __maybe_used remained
Thiago Jung Bauermann writes:
> From: Ryan Grimm
>
> User space might want to know it's running in a secure VM. It can't do
> a mfmsr because mfmsr is a privileged instruction.
>
> The solution here is to create a cpu attribute:
>
> /sys/devices/system/cpu/svm
>
> which will read 0 or 1 based on
Thiago Jung Bauermann writes:
> From: Anshuman Khandual
>
> LPPACA structures need to be shared with the host. Hence they need to be in
> shared memory. Instead of allocating individual chunks of memory for a
> given structure from memblock, a contiguous chunk of memory is allocated
> and then co
[ expanded Cc ]
Linus Torvalds writes:
> On Sat, Aug 10, 2019 at 3:11 AM Michael Ellerman wrote:
>>
>> Just one fix, a revert of a commit that was meant to be a minor improvement
>> to
>> some inline asm, but ended up having no real benefit with GCC and broke
&g
On Thu, 2019-08-01 at 22:52:51 UTC, Leonardo Bras wrote:
> I noticed these nested ifs can be easily replaced by switch-cases,
> which can improve readability.
>
> Signed-off-by: Leonardo Bras
> Reviewed-by: David Hildenbrand
Series applied to powerpc next, thanks.
https://git.kernel.org/powerp
On Thu, 2019-08-01 at 08:32:31 UTC, Christophe JAILLET wrote:
> There is no need to use GFP_ATOMIC here. GFP_KERNEL should be enough.
> GFP_KERNEL is also already used for another allocation just a few lines
> below.
>
> Signed-off-by: Christophe JAILLET
> Reviewed-by: Cédric Le Goater
> Review
On Wed, 2019-07-31 at 06:31:41 UTC, Christophe Leroy wrote:
> PPC32 also have flush_dcache_range() so it can also support
> ARCH_HAS_PMEM_API and ARCH_HAS_UACCESS_FLUSHCACHE without changes.
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/46
On Mon, 2019-06-03 at 22:11:58 UTC, Nathan Chancellor wrote:
> When building with -Wsometimes-uninitialized, clang warns:
>
> drivers/pci/hotplug/rpaphp_core.c:243:14: warning: variable 'fndit' is
> used uninitialized whenever 'for' loop exits because its condition is
> false [-Wsometimes-uninitia
Chancellor, Nick Desaulniers, Segher
Boessenkool.
- ------
Michael Ellerman (1):
Revert "powerpc: slightly improve cache helpers"
arch/powerpc/include/asm/cache.h | 8
1 file changed, 4 insertions(+), 4 deletio
Santosh Sivaraj writes:
> Use memcpy_mcsafe() implementation to define copy_to_user_mcsafe()
>
> Signed-off-by: Santosh Sivaraj
> ---
> arch/powerpc/Kconfig | 1 +
> arch/powerpc/include/asm/uaccess.h | 14 ++
> 2 files changed, 15 insertions(+)
>
> diff --git a/arch/
Nick Desaulniers writes:
> This reverts commit 6c5875843b87c3adea2beade9d1b8b3d4523900a.
>
> Work around Clang bug preventing ppc32 from booting.
>
> Link: https://bugs.llvm.org/show_bug.cgi?id=42762
> Link: https://github.com/ClangBuiltLinux/linux/issues/593
> Debugged-by: Nathan Chancellor
> Re
Chuhong Yuan writes:
> Reference counters are preferred to use refcount_t instead of
> atomic_t.
> This is because the implementation of refcount_t can prevent
> overflows and detect possible use-after-free.
> So convert atomic_t ref counters to refcount_t.
>
> Signed-off-by: Chuhong Yuan
Thanks
[ deliberately broke threading so this doesn't get buried ]
Christophe Leroy writes:
> diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
> index a4fd536efb44..1b0a42c50ef1 100644
> --- a/arch/powerpc/kernel/misc_64.S
> +++ b/arch/powerpc/kernel/misc_64.S
> @@ -115,35 +115
Stephen Rothwell writes:
> Hi all,
>
> Changes since 20190806:
>
> The arm64 tree introduced a patch that stopped the powerpc ppc64_defconfig
> build from completing so I reverted that commit.
>
> The mips tree gained a conflict against Linus' tree.
>
> The crypto tree still had its build failure
Jason Yan writes:
> M_IF_NEEDED is defined too many times. Move it to a common place.
The name is not great, can you call it MAS2_M_IF_NEEDED, which at least
gives a clue what it's for?
cheers
> Signed-off-by: Jason Yan
> Cc: Diana Craciun
> Cc: Michael Ellerman
> Cc: Ch
Hi Jason,
Jason Yan writes:
> This series implements KASLR for powerpc/fsl_booke/32, as a security
> feature that deters exploit attempts relying on knowledge of the location
> of kernel internals.
Thanks for doing this work.
Sorry I didn't get a chance to look at this until v5, I sent a few
co
Jason Yan writes:
> diff --git a/arch/powerpc/kernel/kaslr_booke.c
> b/arch/powerpc/kernel/kaslr_booke.c
> index c6b326424b54..436f9a03f385 100644
> --- a/arch/powerpc/kernel/kaslr_booke.c
> +++ b/arch/powerpc/kernel/kaslr_booke.c
> @@ -361,6 +361,18 @@ static unsigned long __init kaslr_choose_lo
Jason Yan writes:
> This patch add support to boot kernel from places other than KERNELBASE.
> Since CONFIG_RELOCATABLE has already supported, what we need to do is
> map or copy kernel to a proper place and relocate. Freescale Book-E
> parts expect lowmem to be mapped by fixed TLB entries(TLB1).
Jason Yan writes:
> When kaslr is enabled, the kernel offset is different for every boot.
> This brings some difficult to debug the kernel. Dump out the kernel
> offset when panic so that we can easily debug the kernel.
Some of this is taken from the arm64 version right? Please say so when
you co
Jason Yan writes:
> After we have the basic support of relocate the kernel in some
> appropriate place, we can start to randomize the offset now.
>
> Entropy is derived from the banner and timer, which will change every
> build and boot. This not so much safe so additionally the bootloader may
> p
Jason Yan writes:
> Now the kernel base is a fixed value - KERNELBASE. To support KASLR, we
> need a variable to store the kernel base.
>
> Signed-off-by: Jason Yan
> Cc: Diana Craciun
> Cc: Michael Ellerman
> Cc: Christophe Leroy
> Cc: Benjamin Herrenschmidt
&g
Jason Yan writes:
> These two variables are both defined in init_32.c and init_64.c. Move
> them to init-common.c.
>
> Signed-off-by: Jason Yan
> Cc: Diana Craciun
> Cc: Michael Ellerman
> Cc: Christophe Leroy
> Cc: Benjamin Herrenschmidt
> Cc: Paul Mackerras
Chris Packham writes:
> On Tue, 2019-08-06 at 21:32 +1000, Michael Ellerman wrote:
>> Chris Packham writes:
>> > On Mon, 2019-08-05 at 14:06 +1200, Chris Packham wrote:
>> > >
>> > > Hi All,
>> > >
>> > > I have a custom boa
Chris Packham writes:
> On Mon, 2019-08-05 at 14:06 +1200, Chris Packham wrote:
>> Hi All,
>>
>> I have a custom board that uses the Freescale/NXP T2080 SoC.
>>
>> The board boots fine using v4.19.60 but when I use v5.1.21 it locks
>> up
>> waiting for the other CPUs to come online (earlyprintk
Linus Torvalds writes:
> On Sun, Aug 4, 2019 at 4:49 AM Michael Ellerman wrote:
>>
>> Please pull some more powerpc fixes for 5.3:
>
> Hmm. This was caught by the gmail spam-filter for some reason. I don't
> see anything particularly different from your normal pul
nline
Christophe Leroy (1):
powerpc/kasan: fix early boot failure on PPC32
Michael Ellerman (2):
powerpc: Wire up clone3 syscall
powerpc/spe: Mark expected switch fall-throughs
Santosh Sivaraj (1):
powerpc/kvm: Fall through switch case explicitly
Stephen Rothwell (1):
dr
Leonardo Bras writes:
> I noticed these nested ifs can be easily replaced by switch-cases,
> which can improve readability.
>
> Signed-off-by: Leonardo Bras
> ---
> .../platforms/pseries/hotplug-memory.c| 26 +--
> 1 file changed, 18 insertions(+), 8 deletions(-)
Thanks,
Bjorn Helgaas writes:
> On Mon, Jul 22, 2019 at 02:05:12PM +1000, Michael Ellerman wrote:
>> Nathan Chancellor writes:
>> > On Mon, Jun 03, 2019 at 03:11:58PM -0700, Nathan Chancellor wrote:
>> >> When building with -Wsometimes-uninitialized, clang warns:
&g
Chuhong Yuan writes:
> Chuhong Yuan 于2019年7月30日周二 下午2:39写道：
>> Kees Cook 于2019年7月30日周二 下午12:26写道：
>> > On Mon, Jul 29, 2019 at 11:13:46PM +0800, Chuhong Yuan wrote:
>> > > strncmp(str, const, len) is error-prone.
>> > > We had better use newly introduced
>> > > str_has_prefix() instead of it.
>>
Johannes Berg writes:
>> Luca, you said this was already fixed in your internal tree, and the fix
>> would appear soon in next, but I don't see anything in linux-next?
>
> Luca is still on vacation, but I just sent out a version of the patch we
> had applied internally.
Awesome, thanks.
cheers
On Tue, 2019-07-30 at 04:37:04 UTC, Stephen Rothwell wrote:
> Mark switch cases where we are expecting to fall through.
>
> This patch fixes the following warning (Building: powerpc):
>
> drivers/macintosh/smu.c: In function 'smu_queue_i2c':
> drivers/macintosh/smu.c:854:21: warning: this stateme
On Wed, 2019-07-31 at 06:01:42 UTC, Christophe Leroy wrote:
> Due to commit 4a6d8cf90017 ("powerpc/mm: don't use pte_alloc_kernel()
> until slab is available on PPC32"), pte_alloc_kernel() cannot be used
> during early KASAN init.
>
> Fix it by using memblock_alloc() instead.
>
> Reported-by: Erh
Geert Uytterhoeven writes:
> Below is the list of build error/warning regressions/improvements in
> v5.3-rc2[1] compared to v5.2[2].
>
> Summarized:
> - build errors: +10/-1
> - build warnings: +136/-133
>
> JFYI, when comparing v5.3-rc2[1] to v5.3-rc1[3], the summaries are:
> - build errors
Nick Desaulniers writes:
> Commit r353569 in prerelease Clang-9 is producing a linkage failure:
>
> ld: drivers/net/wireless/intel/iwlwifi/fw/dbg.o:
> in function `_iwl_fw_dbg_apply_point':
> dbg.c:(.text+0x827a): undefined reference to `__compiletime_assert_2387'
This breakage is also seen in ol
alli
> Cc: Carl Love
> Cc: Michael Ellerman
> Cc: Naveen N. Rao
> Cc: Paul Clarke
> Cc: Sukadev Bhattiprolu
> Cc: linuxppc-...@ozlabs.org
> LPU-Reference: 20190719100837.7503-1-mpet...@redhat.com
> Signed-off-by: Arnaldo Carvalho de Melo
Acked-by: Michael Ellerman
cheers
Kees Cook writes:
> On Wed, Jul 31, 2019 at 12:28:55AM +1000, Michael Ellerman wrote:
>> Stephen Rothwell writes:
>> > Mark switch cases where we are expecting to fall through.
>> >
>> > This patch fixes the following warning (Building: powerpc):
>> &
On Wed, 2019-07-24 at 14:02:59 UTC, Michael Ellerman wrote:
> Wire up the new clone3 syscall added in commit 7f192e3cd316 ("fork:
> add clone3").
>
> This requires a ppc_clone3 wrapper, in order to save the non-volatile
> GPRs before calling into the generic syscall cod
Stephen Rothwell writes:
> Mark switch cases where we are expecting to fall through.
>
> This patch fixes the following warning (Building: powerpc):
>
> drivers/macintosh/smu.c: In function 'smu_queue_i2c':
> drivers/macintosh/smu.c:854:21: warning: this statement may fall through
> [-Wimplicit-f
Arnd Bergmann writes:
> On Mon, Jul 29, 2019 at 11:52 PM Segher Boessenkool
> wrote:
>> On Mon, Jul 29, 2019 at 01:32:46PM -0700, Nathan Chancellor wrote:
>> > For the record:
>> >
>> > https://godbolt.org/z/z57VU7
>> >
>> > This seems consistent with what Michael found so I don't think a revert
Christian Brauner writes:
> On Mon, Jul 22, 2019 at 11:22:31PM +1000, Michael Ellerman wrote:
>> Wire up the new clone3 syscall added in commit 7f192e3cd316 ("fork:
>> add clone3").
>>
>> This requires a ppc_clone3 wrapper, in order to save the non-vol
sted using Christian's test code on a Power8 LE VM.
Signed-off-by: Michael Ellerman
---
arch/powerpc/include/asm/unistd.h| 1 +
arch/powerpc/kernel/entry_32.S | 8
arch/powerpc/kernel/entry_64.S | 5 +
arch/powerpc/kernel/syscalls/syscall.tbl | 1 +
4 fi
Christian Brauner writes:
> On Wed, Jul 24, 2019 at 12:25:14PM +0700, Arseny Solokha wrote:
>> Hi,
>>
>> may I also ask to provide ppc_clone3 symbol also for 32-bit powerpc?
>> Otherwise
>> Michael's patch breaks build for me:
>
> Makes sense. Michael, are you planning on picking this up? :)
Ye
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Linus,
Please pull some powerpc fixes for 5.3:
The following changes since commit 192f0f8e9db7efe4ac98d47f5fa4334e43c1204d:
Merge tag 'powerpc-5.3-1' of
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (2019-07-13
16:08:36 -0700)
Segher Boessenkool writes:
> On Mon, Jul 22, 2019 at 08:15:14PM +1000, Michael Ellerman wrote:
>> Segher Boessenkool writes:
>> > On Sun, Jul 21, 2019 at 12:58:46AM -0700, Nathan Chancellor wrote:
>> >> 017c clear_user_page:
>> >> 17c: 94
sted using Christian's test code on a Power8 LE VM.
Signed-off-by: Michael Ellerman
---
arch/powerpc/include/asm/unistd.h| 1 +
arch/powerpc/kernel/entry_64.S | 5 +
arch/powerpc/kernel/syscalls/syscall.tbl | 1 +
3 files changed, 7 insertions(+)
diff --git a/arch/powe
Segher Boessenkool writes:
> On Sun, Jul 21, 2019 at 12:58:46AM -0700, Nathan Chancellor wrote:
>> I have attached the disassembly of arch/powerpc/kernel/mem.o with
>> clear_page (working) and broken_clear_page (broken), along with the side
>> by side diff. My assembly knowledge is fairly limited
Nathan Chancellor writes:
> On Mon, Jun 03, 2019 at 03:11:58PM -0700, Nathan Chancellor wrote:
>> When building with -Wsometimes-uninitialized, clang warns:
>>
>> drivers/pci/hotplug/rpaphp_core.c:243:14: warning: variable 'fndit' is
>> used uninitialized whenever 'for' loop exits because its con
On Wed, 2019-07-17 at 10:35:24 UTC, "Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy"
>
> xive_find_target_in_mask() has the following for(;;) loop which has a
> bug when @first == cpumask_first(@mask) and condition 1 fails to hold
> for every CPU in @mask. In this case we loop forever in th
Christian Brauner writes:
> On Mon, Jul 15, 2019 at 03:56:04PM +0200, Christian Borntraeger wrote:
>> I think Vasily already has a clone3 patch for s390x with 435.
>
> A quick follow-up on this. Helge and Michael have asked whether there
> are any tests for clone3. Yes, there will be and I try to
Segher Boessenkool writes:
> On Thu, Jul 18, 2019 at 11:19:58AM +0900, Masahiro Yamada wrote:
>> On Thu, Jul 18, 2019 at 1:46 AM Segher Boessenkool
>> wrote:
>> Kbuild always uses thin archives as far as vmlinux is concerned.
>>
>> But, there are some other call-sites.
>>
>> masahiro@pug:~/ref/
Segher Boessenkool writes:
> On Mon, Jul 15, 2019 at 05:05:34PM +1000, Michael Ellerman wrote:
>> Segher Boessenkool writes:
>> > Yes, that is why I used the environment variable, all binutils work
>> > with that. There was no --target option in GNU ar before 2.22.
Segher Boessenkool writes:
> On Sun, Jul 14, 2019 at 07:45:15AM +0900, Masahiro Yamada wrote:
>> On Sat, Jul 13, 2019 at 10:17 PM Segher Boessenkool
>> wrote:
>> > On Sat, Jul 13, 2019 at 07:47:44AM -0500, Segher Boessenkool wrote:
>> > > On Sat, Jul 13, 2019 at 12:21:06PM +0900, Masahiro Yamada
Christophe Leroy writes:
> PPC32 also have flush_dcache_range() so it can also support
> ARCH_HAS_PMEM_API and ARCH_HAS_UACCESS_FLUSHCACHE without changes.
>
> Signed-off-by: Christophe Leroy
> ---
> arch/powerpc/Kconfig | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git
Qian Cai writes:
> At the beginning of setup_64.c, it has,
>
> #ifdef DEBUG
> #define DBG(fmt...) udbg_printf(fmt)
> #else
> #define DBG(fmt...)
> #endif
>
> where DBG() could be compiled away, and generate warnings,
>
> arch/powerpc/kernel/setup_64.c: In function 'initialize_cache_info'
owerpc: Remove variable ‘path’ since not used
powerpc: silence a -Wcast-function-type warning in dawr_write_file_bool
Michael Ellerman (5):
Merge tag 'powerpc-5.2-6' into fixes
Merge branch 'fixes' into next
powerpc/64s/exception: Remove unused SOFTEN_VALUE_0x
Christophe Leroy writes:
> Le 08/07/2019 à 02:56, Michael Ellerman a écrit :
>> Christophe Leroy writes:
>>> To increase readability/maintainability, replace hard coded
>>> instructions values by symbolic names.
>>>
>>> Signed-off-by: Christophe L
On Fri, 2019-07-05 at 10:01:43 UTC, Masahiro Yamada wrote:
> The next commit will make the way of passing CONFIG options more robust.
> Unfortunately, it would uncover another hidden issue; without this
> commit, skiroot_defconfig would be broken like this:
>
> | WRAParch/powerpc/boot/zImage
Wen Yang writes:
> The cpu variable is still being used in the of_get_property() call
> after the of_node_put() call, which may result in use-after-free.
>
> Fixes: a9acc26b75f ("cpufreq/pasemi: fix possible object reference leak")
> Signed-off-by: Wen Yang
> Cc: "Rafael J. Wysocki"
> Cc: Vires
On Tue, 2019-05-21 at 13:13:24 UTC, Masahiro Yamada wrote:
> With CONFIG_OPTIMIZE_INLINING enabled, Laura Abbott reported error
> with gcc 9.1.1:
>
> arch/powerpc/mm/book3s64/radix_tlb.c: In function '_tlbiel_pid':
> arch/powerpc/mm/book3s64/radix_tlb.c:104:2: warning: asm operand 3 probably
On Tue, 2019-05-14 at 09:05:13 UTC, Christophe Leroy wrote:
> On most arches having function flush_dcache_range(), including PPC32,
> this function does a writeback and invalidation of the cache bloc.
>
> On PPC64, flush_dcache_range() only does a writeback while
> flush_inval_dcache_range() does
On Mon, 2019-06-17 at 14:52:04 UTC, Geert Uytterhoeven wrote:
> "git diff" says:
>
> \ No newline at end of file
>
> after modifying the file.
>
> Signed-off-by: Geert Uytterhoeven
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/7b570361f6f66c91443541b19121038c076e7d64
On Tue, 2019-04-16 at 15:28:57 UTC, Nishad Kamdar wrote:
> This patch corrects the SPDX License Identifier style
> in the powerpc Hardware Architecture related files.
>
> Suggested-by: Joe Perches
> Signed-off-by: Nishad Kamdar
> Acked-by: Andrew Donnellan
Applied to powerpc next, thanks.
htt
On Fri, 2019-06-14 at 06:41:38 UTC, Christophe Leroy wrote:
> Only 8xx selects CPM1 and related CONFIG options are already
> in platforms/8xx/Kconfig
>
> Move the related C files to platforms/8xx/.
>
> Signed-off-by: Christophe Leroy
Series applied to powerpc next, thanks.
https://git.kernel.o
On Sat, 2017-05-06 at 15:37:20 UTC, Geliang Tang wrote:
> In spufs_cntl_fops, since we use nonseekable_open() to open, we
> should use no_llseek() to seek, not generic_file_llseek().
>
> Signed-off-by: Geliang Tang
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/658829dfe75c49
On Fri, 2019-06-14 at 10:16:23 UTC, Christophe Leroy wrote:
> This patch modifies the generation of uImage by handing over
> the selected compression type instead of forcing gzip
>
> Signed-off-by: Christophe Leroy
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/fbded57
On Tue, 2016-12-20 at 14:02:17 UTC, Geliang Tang wrote:
> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
>
> Signed-off-by: Geliang Tang
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/c197922f0a8072d286dff8001f8ad0d4b95ec1dd
cheers
On Tue, 2019-06-04 at 08:00:33 UTC, Krzysztof Kozlowski wrote:
> Remove the CONFIG_UEVENT_HELPER_PATH because:
> 1. It is disabled since commit 1be01d4a5714 ("driver: base: Disable
>CONFIG_UEVENT_HELPER by default") as its dependency (UEVENT_HELPER) was
>made default to 'n',
> 2. It is not
On Fri, 2019-05-03 at 06:40:15 UTC, Christophe Leroy wrote:
> PPC_HA() PPC_HI() and PPC_LO() macros are nice macros. Move them
> from module64.c to ppc-opcode.h in order to use them in other places.
>
> Signed-off-by: Christophe Leroy
Series applied to powerpc next, thanks.
https://git.kernel.o
On Tue, 2019-05-14 at 09:05:15 UTC, Christophe Leroy wrote:
> This patch defines C helpers to retrieve the size of
> cache blocks and uses them in the cacheflush functions.
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/d98fc70fc139b72ae098
On Wed, 2019-07-03 at 16:04:13 UTC, "Enrico Weigelt, metux IT consult" wrote:
> Formatting of Kconfig files doesn't look so pretty, so let the
> Great White Handkerchief come around and clean it up.
>
> Also convert "---help---" as requested on lkml.
>
> Signed-off-by: Enrico Weigelt, metux IT co
On Tue, 2019-05-14 at 09:05:16 UTC, Christophe Leroy wrote:
> This patch drops the assembly PPC64 version of flush_dcache_range()
> and re-uses the PPC32 static inline version.
>
> With GCC 8.1, the following code is generated:
>
> void flush_test(unsigned long start, unsigned long stop)
> {
>
On Fri, 2019-05-10 at 09:24:48 UTC, Christophe Leroy wrote:
> Cache instructions (dcbz, dcbi, dcbf and dcbst) take two registers
> that are summed to obtain the target address. Using 'Z' constraint
> and '%y0' argument gives GCC the opportunity to use both registers
> instead of only one with the s
Christophe Leroy writes:
> To increase readability/maintainability, replace hard coded
> instructions values by symbolic names.
>
> Signed-off-by: Christophe Leroy
> ---
> v3: fixed warning by adding () in an 'if' around X | Y (unlike said in v2
> history, this change was forgotten in v2)
> v2:
Segher Boessenkool writes:
> On Tue, Jul 02, 2019 at 11:16:35AM -0500, Segher Boessenkool wrote:
>> On Wed, Jul 03, 2019 at 01:19:34AM +1000, Michael Ellerman wrote:
>> > What we could do is switch to the `UL` macro from include/linux/const.h,
>> > rather than using ou
Masahiro Yamada writes:
> Commit 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to wrapper")
> was wrong, but commit e41b93a6be57 ("powerpc/boot: Fix build failures
> with -j 1") was also wrong.
>
> The correct dependency is:
>
> $(obj)/serial.o: $(obj)/autoconf.h
>
> However, I do not see
On Wed, 2019-06-05 at 20:46:19 UTC, Qian Cai wrote:
> The opening comment mark "/**" is reserved for kernel-doc comments, so
> it will generate a warning with "make W=1".
>
> arch/powerpc/kernel/eeh_cache.c:37: warning: cannot understand function
> prototype: 'struct pci_io_addr_range
>
> Since t
On Tue, 2019-06-25 at 14:52:36 UTC, Christoph Hellwig wrote:
> This function has never been used anywhere in the kernel tree since it
> was added to the tree. We also now have proper PCIe P2P APIs in the core
> kernel, and any new P2P support should be using those.
>
> Signed-off-by: Christoph He
On Thu, 2019-06-06 at 13:58:13 UTC, Qian Cai wrote:
> The powerpc's flush_cache_vmap() is defined as a macro and never use
> both of its arguments, so it will generate a compilation warning,
>
> lib/ioremap.c: In function 'ioremap_page_range':
> lib/ioremap.c:203:16: warning: variable 'start' set
On Wed, 2019-06-26 at 18:38:01 UTC, "Naveen N. Rao" wrote:
> The recent change enabling HAVE_C_RECORDMCOUNT on powerpc started
> showing the following issue:
>
> # modprobe kprobe_example
>ftrace-powerpc: Not expected bl: opcode is 3c4c0001
>WARNING: CPU: 0 PID: 227 at kernel/trace/ftrac
On Tue, 2019-05-07 at 13:31:38 UTC, Christophe Leroy wrote:
> Selects HAVE_C_RECORDMCOUNT to use the C version of the recordmcount
> intead of the old Perl Version of recordmcount.
>
> This should improve build time. It also seems like the old Perl Version
> misses some calls to _mcount that the C
Hi Leonardo,
Leonardo Bras writes:
> The main reason of this change is to make these bitmasks more readable.
>
> The macro ASM_CONST() just appends an UL to it's parameter, so it can be
> easily replaced by BIT_MASK, that already uses a UL representation.
>
> ASM_CONST() in this file may behave d
On Mon, 2019-06-17 at 21:42:14 UTC, Christophe Leroy wrote:
> Previously, only IBAT1 and IBAT2 were used to map kernel linear mem.
> Since commit 63b2bc619565 ("powerpc/mm/32s: Use BATs for
> STRICT_KERNEL_RWX"), we may have all 8 BATs used for mapping
> kernel text. But the suspend/restore functio
On Thu, 2019-06-13 at 03:30:14 UTC, Ravi Bangoria wrote:
> Powerpc hw triggers watchpoint before executing the instruction. To
> make trigger-after-execute behavior, kernel emulates the instruction.
> If the instruction is 'load something into non-volatile register',
> exception handler should rest
On Mon, 2019-06-17 at 21:22:20 UTC, Andreas Schwab wrote:
> Move a misplaced paren that makes the condition always true.
>
> Fixes: 63b2bc619565 ("powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX")
> Signed-off-by: Andreas Schwab
> Reviewed-by: Christophe Leroy
Applied to powerpc next, thanks.
h
On Mon, 2019-06-17 at 09:07:13 UTC, Geert Uytterhoeven wrote:
> Flexible array members should be denoted using [] instead of [0], else
> gcc will not warn when they are no longer at the end of the structure.
>
> Signed-off-by: Geert Uytterhoeven
Applied to powerpc next, thanks.
https://git.kern
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