Commit e835a65f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'arc-4.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc 

Pull ARC fixes from Vineet Gupta:
 "I've been sitting on some of these fixes for a while.

   - Corner case of returning to delay slot from interrupt
   - Changing default interrupt prioiry level
   - Kconfig'ize support for super pages
   - Other minor fixes"

* tag 'arc-4.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: mm: Introduce explicit super page size support
  ARCv2: intc: Allow interruption by lowest priority interrupt
  ARCv2: Check for LL-SC livelock only if LLSC is enabled
  ARC: shrink cpuinfo by not saving full timer BCR
  ARCv2: clocksource: Rename GRTC -> GFRC ...
  ARCv2: STAR 9000950267: Handle return from intr to Delay Slot #2
parents 0cbb0b92 37eda9df

arch/arc/Kconfig

+20 −1
Original line number Diff line number Diff line
@@ -338,6 +338,19 @@ config ARC_PAGE_SIZE_4K 


endchoice



choice

	prompt "MMU Super Page Size"

	depends on ISA_ARCV2 && TRANSPARENT_HUGEPAGE

	default ARC_HUGEPAGE_2M



config ARC_HUGEPAGE_2M

	bool "2MB"



config ARC_HUGEPAGE_16M

	bool "16MB"



endchoice



if ISA_ARCOMPACT



config ARC_COMPACT_IRQ_LEVELS
@@ -410,7 +423,7 @@ config ARC_HAS_RTC 
	default n

	depends on !SMP



config ARC_HAS_GRTC

config ARC_HAS_GFRC

	bool "SMP synchronized 64-bit cycle counter"

	default y

	depends on SMP
@@ -566,6 +579,12 @@ endmenu 
endmenu	 # "ARC Architecture Configuration"



source "mm/Kconfig"



config FORCE_MAX_ZONEORDER

	int "Maximum zone order"

	default "12" if ARC_HUGEPAGE_16M

	default "11"



source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

arch/arc/configs/vdk_hs38_smp_defconfig

+1 −1
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ CONFIG_ARC_PLAT_AXS10X=y 
CONFIG_AXS103=y

CONFIG_ISA_ARCV2=y

CONFIG_SMP=y

# CONFIG_ARC_HAS_GRTC is not set

# CONFIG_ARC_HAS_GFRC is not set

CONFIG_ARC_UBOOT_SUPPORT=y

CONFIG_ARC_BUILTIN_DTB_NAME="vdk_hs38_smp"

CONFIG_PREEMPT=y

arch/arc/include/asm/arcregs.h

+1 −2
Original line number Diff line number Diff line
@@ -349,14 +349,13 @@ struct cpuinfo_arc { 
	struct cpuinfo_arc_bpu bpu;

	struct bcr_identity core;

	struct bcr_isa isa;

	struct bcr_timer timers;

	unsigned int vec_base;

	struct cpuinfo_arc_ccm iccm, dccm;

	struct {

		unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,

			     fpu_sp:1, fpu_dp:1, pad2:6,

			     debug:1, ap:1, smart:1, rtt:1, pad3:4,

			     pad4:8;

			     timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;

	} extn;

	struct bcr_mpy extn_mpy;

	struct bcr_extn_xymem extn_xymem;

arch/arc/include/asm/irqflags-arcv2.h

+5 −2
Original line number Diff line number Diff line
@@ -30,8 +30,11 @@ 
/* Was Intr taken in User Mode */

#define AUX_IRQ_ACT_BIT_U	31



/* 0 is highest level, but taken by FIRQs, if present in design */

#define ARCV2_IRQ_DEF_PRIO		0

/*

 * User space should be interruptable even by lowest prio interrupt

 * Safe even if actual interrupt priorities is fewer or even one

 */

#define ARCV2_IRQ_DEF_PRIO	15



/* seed value for status register */

#define ISA_INIT_STATUS_BITS	(STATUS_IE_MASK | STATUS_AD_MASK | \

arch/arc/include/asm/mcip.h

+2 −2
Original line number Diff line number Diff line
@@ -39,8 +39,8 @@ struct mcip_cmd { 
#define CMD_DEBUG_SET_MASK		0x34

#define CMD_DEBUG_SET_SELECT		0x36



#define CMD_GRTC_READ_LO		0x42

#define CMD_GRTC_READ_HI		0x43

#define CMD_GFRC_READ_LO		0x42

#define CMD_GFRC_READ_HI		0x43



#define CMD_IDU_ENABLE			0x71

#define CMD_IDU_DISABLE			0x72

CRA Git | Maintained and supported by SUSTech CRA and CCSE