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Hi Michael, On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote: > This defines __smp_xxx barriers for metag, > for use by virtualization. > > smp_xxx barriers are removed as they are > defined correctly by asm-generic/barriers.h > > Note: as __smp_XX macros should not depend on CONFIG_SMP, they can not > use the existing fence() macro since that is defined differently between >...

Hi Michael, On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote: > This defines __smp_xxx barriers for metag, > for use by virtualization. > > smp_xxx barriers are removed as they are > defined correctly by asm-generic/barriers.h > > Note: as __smp_XX macros should not depend on CONFIG_SMP, they can not > use the existing fence() macro since that is defined differently between >...

This defines __smp_xxx barriers for metag, for use by virtualization. smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Note: as __smp_XX macros should not depend on CONFIG_SMP, they can not use the existing fence() macro since that is defined differently between SMP and !SMP. For this reason, this pat...

On metag dma_rmb, dma_wmb, smp_store_mb, read_barrier_depends, smp_read_barrier_depends, smp_store_release and smp_load_acquire match the asm-generic variants exactly. Drop the local definitions and pull in asm-generic/barrier.h instead. This is in preparation to refactoring this code area. Signed-off-by...

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski <k.kozlowski at samsung.com> --- arch/metag/kernel/dma.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/metag/kernel/dma.c b/arch/metag/kernel/dma.c index e12368d02155..d68f498e82a1 100644 --- a/arch/metag/kernel/dma.c +++ b/arch/metag/kernel/dma.c @@ -172,7 +172,7 @@ out: * virtual and bus address...

On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote: > +#ifdef CONFIG_SMP > +#define fence() metag_fence() > +#else > +#define fence() do { } while (0) > #endif James, it strikes me as odd that fence() is a no-op instead of a barrier() for UP, can you verify/explain?

On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote: > +#ifdef CONFIG_SMP > +#define fence() metag_fence() > +#else > +#define fence() do { } while (0) > #endif James, it strikes me as odd that fence() is a no-op instead of a barrier() for UP, can you verify/explain?

Hi Peter, On Mon, Jan 04, 2016 at 02:41:28PM +0100, Peter Zijlstra wrote: > On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote: > > +#ifdef CONFIG_SMP > > +#define fence() metag_fence() > > +#else > > +#define fence() do { } while (0) > > #endif > > James, it strikes me as odd that fence() is a no-op instead of a > barrier() for UP, can you verify/explain? fence() is an unfortunate workaround for a specific issue on a certain SoC, where write...

On Mon, Jan 04, 2016 at 03:25:58PM +0000, James Hogan wrote: > It is used along with the metag specific __global_lock1() (global > voluntary lock between hw threads) whenever a write is performed, and by > smp_mb/smp_rmb to try to catch other cases, but I've never been > confident this fixes every single corner case, since there could be > other places where multiple CPUs per...

...: smbclient \\server\tmp , I get the message: "added interface ip=my.ip.address bcast=another.ip.address nmask=255.255.255.248 Connection to server failed" Not able to locate this error in docs or o'reilly samba book, can anyone help? tia -------------------------------------------- METAgency - Media and Ecommerce Technology Ph: (775) 284-8657 Fax: (775) 284-8658 Wireless: (775) 720-2119 Web: http://www.metagency.com --------------------------------------------

...ad_acquire ia64: rename nop->iosapic_nop ia64: reuse asm-generic/barrier.h powerpc: reuse asm-generic/barrier.h s390: reuse asm-generic/barrier.h sparc: reuse asm-generic/barrier.h arm: reuse asm-generic/barrier.h arm64: reuse asm-generic/barrier.h metag: reuse asm-generic/barrier.h mips: reuse asm-generic/barrier.h x86/um: reuse asm-generic/barrier.h x86: reuse asm-generic/barrier.h asm-generic: add __smp_xxx wrappers powerpc: define __smp_xxx arm64: define __smp_xxx arm: define __smp_xxx blackfin: d...

...ad_acquire ia64: rename nop->iosapic_nop ia64: reuse asm-generic/barrier.h powerpc: reuse asm-generic/barrier.h s390: reuse asm-generic/barrier.h sparc: reuse asm-generic/barrier.h arm: reuse asm-generic/barrier.h arm64: reuse asm-generic/barrier.h metag: reuse asm-generic/barrier.h mips: reuse asm-generic/barrier.h x86/um: reuse asm-generic/barrier.h x86: reuse asm-generic/barrier.h asm-generic: add __smp_xxx wrappers powerpc: define __smp_xxx arm64: define __smp_xxx arm: define __smp_xxx blackfin: d...

...objdump -O binary) and made sure that the object code is exactly identical before and after the change. I couldn't fully build sh,tile,xtensa but I did this test kernel/rcu/tree.o kernel/sched/wait.o and kernel/futex.o and tested these instead. Unfortunately, I don't have a metag cross-build toolset ready. Hoping for some acks on this architecture. Finally, the following patches put the __smp_xxx APIs to work for virt: -. Patch 28 adds virt_ wrappers for __smp_, and documents them. After all this work, this requires very few lines of code in the generic header. -....

...objdump -O binary) and made sure that the object code is exactly identical before and after the change. I couldn't fully build sh,tile,xtensa but I did this test kernel/rcu/tree.o kernel/sched/wait.o and kernel/futex.o and tested these instead. Unfortunately, I don't have a metag cross-build toolset ready. Hoping for some acks on this architecture. Finally, the following patches put the __smp_xxx APIs to work for virt: -. Patch 28 adds virt_ wrappers for __smp_, and documents them. After all this work, this requires very few lines of code in the generic header. -....

...gt;iosapic_nop > ia64: reuse asm-generic/barrier.h > powerpc: reuse asm-generic/barrier.h > s390: reuse asm-generic/barrier.h > sparc: reuse asm-generic/barrier.h > arm: reuse asm-generic/barrier.h > arm64: reuse asm-generic/barrier.h > metag: reuse asm-generic/barrier.h > mips: reuse asm-generic/barrier.h > x86/um: reuse asm-generic/barrier.h > x86: reuse asm-generic/barrier.h > asm-generic: add __smp_xxx wrappers > powerpc: define __smp_xxx > arm64: define __smp_xxx > arm:...

...s: fix sparse errors alpha/uaccess: fix sparse errors arm64/uaccess: fix sparse errors avr32/uaccess: fix sparse errors blackfin/uaccess: fix sparse errors cris/uaccess: fix sparse errors ia64/uaccess: fix sparse errors m32r/uaccess: fix sparse errors metag/uaccess: fix sparse errors openrisc/uaccess: fix sparse errors parisc/uaccess: fix sparse errors sh/uaccess: fix sparse errors sparc32/uaccess: fix sparse errors sparc64/uaccess: fix sparse errors m68k/uaccess: fix sparse errors arm: fix put_user sparse err...

...s: fix sparse errors alpha/uaccess: fix sparse errors arm64/uaccess: fix sparse errors avr32/uaccess: fix sparse errors blackfin/uaccess: fix sparse errors cris/uaccess: fix sparse errors ia64/uaccess: fix sparse errors m32r/uaccess: fix sparse errors metag/uaccess: fix sparse errors openrisc/uaccess: fix sparse errors parisc/uaccess: fix sparse errors sh/uaccess: fix sparse errors sparc32/uaccess: fix sparse errors sparc64/uaccess: fix sparse errors m68k/uaccess: fix sparse errors arm: fix put_user sparse err...

...| 1 - arch/frv/include/asm/processor.h | 1 - arch/h8300/include/asm/processor.h | 1 - arch/hexagon/include/asm/processor.h | 1 - arch/ia64/include/asm/processor.h | 1 - arch/m32r/include/asm/processor.h | 1 - arch/m68k/include/asm/processor.h | 1 - arch/metag/include/asm/processor.h | 1 - arch/microblaze/include/asm/processor.h | 1 - arch/mips/include/asm/processor.h | 1 - arch/mn10300/include/asm/processor.h | 1 - arch/nios2/include/asm/processor.h | 1 - arch/openrisc/include/asm/processor.h | 1 - arch/parisc/include/asm/proc...

...| 1 - arch/frv/include/asm/processor.h | 1 - arch/h8300/include/asm/processor.h | 1 - arch/hexagon/include/asm/processor.h | 1 - arch/ia64/include/asm/processor.h | 1 - arch/m32r/include/asm/processor.h | 1 - arch/m68k/include/asm/processor.h | 1 - arch/metag/include/asm/processor.h | 1 - arch/microblaze/include/asm/processor.h | 1 - arch/mips/include/asm/processor.h | 1 - arch/mn10300/include/asm/processor.h | 1 - arch/nios2/include/asm/processor.h | 1 - arch/openrisc/include/asm/processor.h | 1 - arch/parisc/include/asm/proc...

...| 1 - arch/frv/include/asm/processor.h | 1 - arch/h8300/include/asm/processor.h | 1 - arch/hexagon/include/asm/processor.h | 1 - arch/ia64/include/asm/processor.h | 1 - arch/m32r/include/asm/processor.h | 1 - arch/m68k/include/asm/processor.h | 1 - arch/metag/include/asm/processor.h | 1 - arch/microblaze/include/asm/processor.h | 1 - arch/mips/include/asm/processor.h | 1 - arch/mn10300/include/asm/processor.h | 1 - arch/nios2/include/asm/processor.h | 1 - arch/openrisc/include/asm/processor.h | 1 - arch/parisc/include/asm/proc...