Re: [PATCH] powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE

Hi Santosh, [auto build test ERROR on powerpc/next] [also build test ERROR on v4.13-rc1 next-20170721] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

Re: [PATCH 1/2] powerpc/xmon: support dumping software pagetables

-software-pagetables/20170723-002848 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-akebono_defconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org

Re: [PATCH 0/4] Allow non-legacy cards to be vgaarb default

Hi Ard, > But the fact remains that we are going about this the wrong way. > Whether a graphics card decodes legacy VGA ranges or not has *nothing* > to do with whether or not it is in fact the primary device on a > non-x86 system, and so I still think the VGA arbiter should be omitted > entirely

[PATCH v2] qe: fix compile issue for arm64

Signed-off-by: Zhao Qiang --- Changes for v2: - include all Errata QE_General4 in #ifdef drivers/soc/fsl/qe/qe.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c index 2ef6fc6..4ac9ce8 100644 ---

[PATCH 6/6] powerpc/mm: Make switch_mm_irqs_off() out of line

It's too big to be inline, there is no reason to keep it that way. Signed-off-by: Benjamin Herrenschmidt # Conflicts: # arch/powerpc/include/asm/mmu_context.h --- arch/powerpc/include/asm/mmu_context.h | 73 ++

[PATCH 4/6] powerpc/mm: Use mm_is_thread_local() instread of open-coding

We open-code testing for the mm being local to the current CPU in a few places. Use our existing helper instead. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/mm/hash_utils_64.c | 6 ++ arch/powerpc/mm/hugetlbpage.c| 3 +--

[PATCH 5/6] powerpc/mm: Optimize detection of thread local mm's

Instead of comparing the whole CPU mask every time, let's keep a counter of how many bits are set in the mask. Thus testing for a local mm only requires testing if that counter is 1 and the current CPU bit is set in the mask. Signed-off-by: Benjamin Herrenschmidt ---

Re: [PATCH] qe: fix compile issue for arm64

On Mon, 2017-07-24 at 02:09 +, Qiang Zhao wrote: > On Fri, 2017-07-21 at 02:34PM, Michael Ellerman wrote: > > > -Original Message- > > From: Michael Ellerman [mailto:m...@ellerman.id.au] > > Sent: Friday, July 21, 2017 2:34 PM > > To: Qiang Zhao

[PATCH 2/6] powerpc/mm: Avoid double irq save/restore in activate_mm

It calls switch_mm() which already does the irq save/restore these days. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/mmu_context.h | 4 1 file changed, 4 deletions(-) diff --git a/arch/powerpc/include/asm/mmu_context.h

Re: [PATCH] powerpc/asm/cacheflush: Cleanup cacheflush function params

I've realised that changing the arguments for the cacheflush functions is much more work than its worth, due to other archs using these functions. The next patch will just translate the asm cacheflush functions to c, keeping the existing parameters. So this won't have any effect on the drivers.

[PATCH v5] powerpc/mm/radix: Workaround prefetch issue with KVM

There's a somewhat architectural issue with Radix MMU and KVM. When coming out of a guest with AIL (ie, MMU enabled), we start executing hypervisor code with the PID register still containing whatever the guest has been using. The problem is that the CPU can (and will) then start prefetching or

[PATCH 3/6] powerpc/mm: Ensure cpumask update is ordered

There is no guarantee that the various isync's involved with the context switch will order the update of the CPU mask with the first TLB entry for the new context being loaded by the HW. Be safe here and add a memory barrier to order any subsequent load/store which may bring entries into the TLB.

[PATCH 1/6] powerpc/mm: Move pgdir setting into a helper

Makes switch_mm_irqs_off() a bit more readable Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/mmu_context.h | 30 ++ 1 file changed, 22 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/include/asm/mmu_context.h

[PATCH v2 1/5] powerpc/lib/sstep: Add cmpb instruction emulation

This patch adds emulation of the cmpb instruction, enabling xmon to emulate this instruction. Tested for correctness against the cmpb asm instruction on ppc64le. Signed-off-by: Matt Brown --- v2: - fixed opcode - fixed mask typecasting ---

Re: [PATCH] powerpc/pseries: Fix of_node_put() underflow during pseries remove

On Fri, Jul 21, 2017 at 04:51:39PM +0200, Laurent Vivier wrote: > As for commit 68baf692c435 ("powerpc/pseries: Fix of_node_put() > underflow during DLPAR remove"), the call to of_node_put() > must be removed from pSeries_reconfig_remove_node(). > > dlpar_detach_node() and

Re: [PATCH] powerpc/tm: fix TM SPRs in code dump file

On Wed, 2017-07-19 at 01:44 -0400, Gustavo Romero wrote: > Currently flush_tmregs_to_thread() does not update accordingly the thread > structures from live state before a core dump rendering wrong values of > THFAR, TFIAR, and TEXASR in core dump files. > > That commit fixes it by copying from

RE: [PATCH] qe: fix compile issue for arm64

On Fri, 2017-07-21 at 02:34PM, Michael Ellerman wrote: > -Original Message- > From: Michael Ellerman [mailto:m...@ellerman.id.au] > Sent: Friday, July 21, 2017 2:34 PM > To: Qiang Zhao ; o...@buserror.net > Cc: valentin.longch...@keymile.com;

[PATCH v2 2/5] powerpc/lib/sstep: Add popcnt instruction emulation

This adds emulations for the popcntb, popcntw, and popcntd instructions. Tested for correctness against the popcnt{b,w,d} instructions on ppc64le. Signed-off-by: Matt Brown --- v2: - fixed opcodes - fixed typecasting - fixed bitshifting error

[PATCH 4/5] powerpc/lib/sstep: Add prty instruction emulation

This add emulation for the prtyw and prtyd instructions. Tested for logical correctness against the prtyw and prtyd instructions on ppc64le. Signed-off-by: Matt Brown --- v2: - fixed opcodes - fixed bitshifting and typecast errors - merged

[PATCH v2 5/5] powerpc/lib/sstep: Add isel instruction emulation

This adds emulation for the isel instruction. Tested for correctness against the isel instruction and its extended mnemonics (lt, gt, eq) on ppc64le. Signed-off-by: Matt Brown --- v2: - fixed opcode - fixed definition to include the 'if RA=0, a=0'

[PATCH v2 3/5] powerpc/lib/sstep: Add bpermd instruction emulation

This adds emulation for the bpermd instruction. Tested for correctness against the bpermd instruction on ppc64le. Signed-off-by: Matt Brown --- v2: - fixed opcode - added ifdef tags to do_bpermd func - fixed bitshifting errors ---

RE: [PATCH 1/2] fsl/qe: NULL dereference on error in ucc_of_parse_tdm()

On Sat 7/22/2017 3:34 PM, Dan Carpenter wrote: > -Original Message- > From: Dan Carpenter [mailto:dan.carpen...@oracle.com] > Sent: Saturday, July 22, 2017 3:34 PM > To: Qiang Zhao > Cc: Leo Li ;