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Filename Latest commit message Latest commit date
Jacob Keller 571a13b350 ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter 
[ Upstream commit 25d7a5f5a6bb15a2dae0a3f39ea5dda215024726 ]

The ixgbe_ptp_start_cyclecounter is intended to be called whenever the
cyclecounter parameters need to be changed.

Since commit a9763f3cb5 ("ixgbe: Update PTP to support X550EM_x
devices"), this function has cleared the SYSTIME registers and reset the
TSAUXC DISABLE_SYSTIME bit.

While these need to be cleared during ixgbe_ptp_reset, it is wrong to clear
them during ixgbe_ptp_start_cyclecounter. This function may be called
during both reset and link status change. When link changes, the SYSTIME
counter is still operating normally, but the cyclecounter should be updated
to account for the possibly changed parameters.

Clearing SYSTIME when link changes causes the timecounter to jump because
the cycle counter now reads zero.

Extract the SYSTIME initialization out to a new function and call this
during ixgbe_ptp_reset. This prevents the timecounter adjustment and avoids
an unnecessary reset of the current time.

This also restores the original SYSTIME clearing that occurred during
ixgbe_ptp_reset before the commit above.

Reported-by: Steve Payne <spayne@aurora.tech>
Reported-by: Ilya Evenbach <ievenbach@aurora.tech>
Fixes: a9763f3cb5 ("ixgbe: Update PTP to support X550EM_x devices")
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-09-05 10:27:42 +02:00
arch parisc: Fix exception handler for fldw and fstw instructions 2022-09-05 10:27:38 +02:00
block blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created 2022-08-25 11:17:36 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto crypto: drbg - make reseeding from get_random_bytes() synchronous 2022-06-22 14:11:18 +02:00
Documentation locking/atomic: Make test_and_*_bit() ordered on failure 2022-08-25 11:18:31 +02:00
drivers ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter 2022-09-05 10:27:42 +02:00
fs btrfs: raid56: don't trust any cached sector in __raid56_parity_recover() 2022-08-25 11:18:40 +02:00
include net: Fix a data-race around sysctl_net_busy_poll. 2022-09-05 10:27:42 +02:00
init random: handle latent entropy and command line from random_init() 2022-06-22 14:11:17 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-14 18:11:41 +02:00
kernel sched/deadline: Fix priority inheritance with multiple scheduling classes 2022-09-05 10:27:39 +02:00
lib ratelimit: Fix data-races in ___ratelimit(). 2022-09-05 10:27:42 +02:00
LICENSES
mm mm/mmap.c: fix missing call to vm_unacct_memory in mmap_region 2022-08-25 11:17:58 +02:00
net net: Fix a data-race around sysctl_somaxconn. 2022-09-05 10:27:42 +02:00
samples samples/kretprobes: Fix return value if register_kretprobe() failed 2021-11-17 09:48:39 +01:00
scripts gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file 2022-08-25 11:18:31 +02:00
security apparmor: Fix memleak in aa_simple_write_to_buffer() 2022-08-25 11:18:21 +02:00
sound ALSA: timer: Use deferred fasync helper 2022-08-25 11:18:38 +02:00
tools Revert "selftests/bpf: Fix test_align verifier log patterns" 2022-09-05 10:27:39 +02:00
usr
virt KVM: Add infrastructure and macro to mark VM as bugged 2022-08-25 11:18:16 +02:00
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.cocciconfig
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MAINTAINERS MAINTAINERS: co-maintain random.c 2022-06-22 14:11:05 +02:00
Makefile Linux 5.4.211 2022-08-25 11:18:40 +02:00
README

README 

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

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.