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authorKevin Hilman <khilman@linaro.org>2015-10-13 16:29:43 -0700
committerKevin Hilman <khilman@linaro.org>2015-10-13 16:29:43 -0700
commit974070b95b0c8ff6ef0d62109c16aea160cf3c7c (patch)
tree71da351fb8feb8698f2295e4a4a7def9a4623a81 /arch/arm64/kernel/head.S
parent4d869de174c78ae29ca91b41581367c8092d933d (diff)
parentf5552cd830e58c46dffae3617b3ce0c839771981 (diff)
Merge branch 'linux-3.10.y' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into linux-linaro-lsk-v3.10lsk-v3.10-15.10
* 'linux-3.10.y' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable: (77 commits) Linux 3.10.90 Revert "iio: bmg160: IIO_BUFFER and IIO_TRIGGERED_BUFFER are required" vfs: Remove incorrect debugging WARN in prepend_path fib_rules: fix fib rule dumps across multiple skbs sctp: fix race on protocol/netns initialization net/ipv6: Correct PIM6 mrt_lock handling ipv6: fix exthdrs offload registration in out_rt path usbnet: Get EVENT_NO_RUNTIME_PM bit before it is cleared ip6_gre: release cached dst on tunnel removal rds: fix an integer overflow test in rds_info_getsockopt() netlink: don't hold mutex in rcu callback when releasing mmapd ring inet: frags: fix defragmented packet's IP header for af_packet bonding: fix destruction of bond with devices different from arphrd_ether ipv6: lock socket in ip6_datagram_connect() isdn/gigaset: reset tty->receive_room when attaching ser_gigaset bridge: mdb: fix double add notification net: Fix skb_set_peeked use-after-free bug net: Fix skb csum races when peeking net: Clone skb before setting peeked flag net: call rcu_read_lock early in process_backlog ...
Diffstat (limited to 'arch/arm64/kernel/head.S')
-rw-r--r--arch/arm64/kernel/head.S5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 6254f4a28eed..c0fe90f6b950 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -326,6 +326,11 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems
msr hstr_el2, xzr // Disable CP15 traps to EL2
#endif
+ /* EL2 debug */
+ mrs x0, pmcr_el0 // Disable debug access traps
+ ubfx x0, x0, #11, #5 // to EL2 and allow access to
+ msr mdcr_el2, x0 // all PMU counters from EL1
+
/* Stage-2 translation */
msr vttbr_el2, xzr