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Keqian Zhu 290a79f8af clocksource/drivers/arm_arch_timer: Correct fault programming of CNTKCTL_EL1.EVNTI 
[ Upstream commit 8b7770b877 ]

ARM virtual counter supports event stream, it can only trigger an event
when the trigger bit (the value of CNTKCTL_EL1.EVNTI) of CNTVCT_EL0 changes,
so the actual period of event stream is 2^(cntkctl_evnti + 1). For example,
when the trigger bit is 0, then virtual counter trigger an event for every
two cycles.

While we're at it, rework the way we compute the trigger bit position
by making it more obvious that when bits [n:n-1] are both set (with n
being the most significant bit), we pick bit (n + 1).

Fixes: 037f637767 ("drivers: clocksource: add support for ARM architected timer event stream")
Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20201204073126.6920-3-zhukeqian1@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-29 13:46:59 +01:00
arch arm64: dts: rockchip: Fix UART pull-ups on rk3328 2020-12-29 13:46:58 +01:00
block blk-cgroup: Pre-allocate tree node on blkg_conf_prep 2020-11-10 10:29:05 +01:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: af_alg - avoid undefined behavior accessing salg_name 2020-12-29 13:46:50 +01:00
Documentation USB: UAS: introduce a quirk to set no_write_same 2020-12-29 13:46:46 +01:00
drivers clocksource/drivers/arm_arch_timer: Correct fault programming of CNTKCTL_EL1.EVNTI 2020-12-29 13:46:59 +01:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:20:30 +01:00
fs NFS: switch nfsiod to be an UNBOUND workqueue. 2020-12-29 13:46:57 +01:00
include SUNRPC: xprt_load_transport() needs to support the netid "rdma6" 2020-12-29 13:46:57 +01:00
init printk: reduce LOG_BUF_SHIFT range for H8300 2020-11-05 11:06:55 +01:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:17:07 +02:00
kernel genirq/irqdomain: Don't try to free an interrupt that has no mapping 2020-12-29 13:46:56 +01:00
lib random32: make prandom_u32() output unpredictable 2020-11-18 18:28:00 +01:00
mm mm/swapfile: do not sleep with a spin lock held 2020-12-11 13:39:05 +01:00
net SUNRPC: xprt_load_transport() needs to support the netid "rdma6" 2020-12-29 13:46:57 +01:00
samples samples: bpf: Fix lwt_len_hist reusing previous BPF map 2020-12-29 13:46:56 +01:00
scripts scripts/setlocalversion: make git describe output more reliable 2020-11-05 11:06:51 +01:00
security selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling 2020-12-29 13:46:52 +01:00
sound ASoC: jz4740-i2s: add missed checks for clk_get() 2020-12-29 13:46:58 +01:00
tools x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 2020-12-11 13:39:07 +01:00
usr initramfs: restore default compression behavior 2020-04-13 10:34:19 +02:00
virt KVM: fix overflow of zero page refcount with ksm running 2020-10-01 13:12:33 +02:00
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.gitignore kbuild: rpm-pkg: keep spec file until make mrproper 2018-02-13 10:19:46 +01:00
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MAINTAINERS MAINTAINERS: Update drm/i915 bug filing URL 2020-02-28 16:36:12 +01:00
Makefile Linux 4.14.212 2020-12-11 13:39:07 +01:00
README

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.