[PATCH 1/3 v7] ARC: Set IO-coherency aperture base to LINUX_LINK_BASE

2017-07-03 Thread Eugeniy Paltsev
Most of the time we indeed use the one and only LINUX_LINK_BASE set to 0x8000_. But there might be good reasons to move the kernel to another location like 0x9z etc. And we want IOC aperture to cover entire area used by the kernel, so let's make its base matching link base and add required ass

[PATCH 2/3 v7] ARC: Decouple linux kernel memory address and link address

2017-07-03 Thread Eugeniy Paltsev
We faced with problem when we tried to utilize 1G DRAM by linux on HSDK. We can't use our usual kernel memory address (0x8000) like on AXS103 because of DCCM memory bank located at exactly same address (0x8000) But we can't simply move kernel memory address to another address (like 0x9

[PATCH 3/3 v7] ARC: hsdk: initial port for HSDK board

2017-07-03 Thread Eugeniy Paltsev
From: Alexey Brodkin This initial port adds support of ARC HS Development Kit board with some basic features such serial port, USB, SD/MMC and Ethernet. Essentially we run Linux kernel on all 4 cores (i.e. utilize SMP) and heavily use IO Coherency for speeding-up DMA-aware peripherals. Note as

[PATCH 0/3 v7] hsdk: initial port for HSDK board

2017-07-03 Thread Eugeniy Paltsev
This series introduces some required preparations and initial port of ARC HS Development Kit board with some basic features such as serial port, USB, SD/MMC and Ethernet. Essentially we run Linux kernel on all 4 cores (i.e. utilize SMP) and heavily use IO Coherency for speeding-up DMA-aware periph

Re: [PATCH 1/1] futex: remove duplicated code and fix UB

2017-07-03 Thread Thomas Gleixner
On Mon, 26 Jun 2017, Jiri Slaby wrote: > On 06/23/2017, 09:51 AM, Thomas Gleixner wrote: > > On Wed, 21 Jun 2017, Jiri Slaby wrote: > >> diff --git a/arch/arm64/include/asm/futex.h > >> b/arch/arm64/include/asm/futex.h > >> index f32b42e8725d..5bb2fd4674e7 100644 > >> --- a/arch/arm64/include/asm/