summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2019-11-15 09:10:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-11-15 09:10:13 -0800
commit34b38f5abd1f0793e75cc97c4781d04b6c7f4d9e (patch)
tree44f15af1ec00182af907a0f7ee31545b0881653b
parent74bc8acd6cb4f5cee25fcfe4e9afb06f75949081 (diff)
parentf6929c92e283a35b183c293574adcbca409bf144 (diff)
Merge tag 'mips_fixes_5.4_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Paul Burton: "A fix and simplification for SGI IP27 exception handlers, and a small MAINTAINERS update for Broadcom MIPS systems" * tag 'mips_fixes_5.4_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MAINTAINERS: Remove Kevin as maintainer of BMIPS generic platforms MIPS: SGI-IP27: fix exception handler replication
-rw-r--r--MAINTAINERS1
-rw-r--r--arch/mips/sgi-ip27/Kconfig7
-rw-r--r--arch/mips/sgi-ip27/ip27-init.c21
-rw-r--r--arch/mips/sgi-ip27/ip27-memory.c4
4 files changed, 6 insertions, 27 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index f77959ecf7e0..9dffd64d5e99 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3261,7 +3261,6 @@ S: Maintained
F: drivers/cpufreq/bmips-cpufreq.c
BROADCOM BMIPS MIPS ARCHITECTURE
-M: Kevin Cernekee <cernekee@gmail.com>
M: Florian Fainelli <f.fainelli@gmail.com>
L: bcm-kernel-feedback-list@broadcom.com
L: linux-mips@vger.kernel.org
diff --git a/arch/mips/sgi-ip27/Kconfig b/arch/mips/sgi-ip27/Kconfig
index ef3847e7aee0..e5b6cadbec85 100644
--- a/arch/mips/sgi-ip27/Kconfig
+++ b/arch/mips/sgi-ip27/Kconfig
@@ -38,10 +38,3 @@ config REPLICATE_KTEXT
Say Y here to enable replicating the kernel text across multiple
nodes in a NUMA cluster. This trades memory for speed.
-config REPLICATE_EXHANDLERS
- bool "Exception handler replication support"
- depends on SGI_IP27
- help
- Say Y here to enable replicating the kernel exception handlers
- across multiple nodes in a NUMA cluster. This trades memory for
- speed.
diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index 59d5375c9021..79a52c472782 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -69,23 +69,14 @@ static void per_hub_init(cnodeid_t cnode)
hub_rtc_init(cnode);
-#ifdef CONFIG_REPLICATE_EXHANDLERS
- /*
- * If this is not a headless node initialization,
- * copy over the caliased exception handlers.
- */
- if (get_compact_nodeid() == cnode) {
- extern char except_vec2_generic, except_vec3_generic;
- extern void build_tlb_refill_handler(void);
-
- memcpy((void *)(CKSEG0 + 0x100), &except_vec2_generic, 0x80);
- memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x80);
- build_tlb_refill_handler();
- memcpy((void *)(CKSEG0 + 0x100), (void *) CKSEG0, 0x80);
- memcpy((void *)(CKSEG0 + 0x180), &except_vec3_generic, 0x100);
+ if (nasid) {
+ /* copy exception handlers from first node to current node */
+ memcpy((void *)NODE_OFFSET_TO_K0(nasid, 0),
+ (void *)CKSEG0, 0x200);
__flush_cache_all();
+ /* switch to node local exception handlers */
+ REMOTE_HUB_S(nasid, PI_CALIAS_SIZE, PI_CALIAS_SIZE_8K);
}
-#endif
}
void per_cpu_init(void)
diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index fb077a947575..8624a885d95b 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -332,11 +332,7 @@ static void __init mlreset(void)
* thinks it is a node 0 address.
*/
REMOTE_HUB_S(nasid, PI_REGION_PRESENT, (region_mask | 1));
-#ifdef CONFIG_REPLICATE_EXHANDLERS
- REMOTE_HUB_S(nasid, PI_CALIAS_SIZE, PI_CALIAS_SIZE_8K);
-#else
REMOTE_HUB_S(nasid, PI_CALIAS_SIZE, PI_CALIAS_SIZE_0);
-#endif
#ifdef LATER
/*