Messages in this thread | | | Date | Sun, 28 Jun 2020 16:38:35 +0200 | From | Borislav Petkov <> | Subject | [GIT PULL] rcu/urgent for 5.8-rc3 |
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Hi Linus,
please pull two urgent RCU, KCSAN-related fixes.
Thx.
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The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:
Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/rcu_urgent_for_5.8_rc3
for you to fetch changes up to b58e733fd774f3f4b49d9e7640d172a57e35200e:
rcu: Fixup noinstr warnings (2020-06-25 08:24:32 -0700)
---------------------------------------------------------------- Paul E. McKenney says:
A single commit that uses "arch_" atomic operations to avoid the instrumentation that comes with the non-"arch_" versions. In preparation for that commit, it also has another commit that makes these "arch_" atomic operations available to generic code.
Without these commits, KCSAN uses can see pointless errors.
Both from Peter Zijlstra.
---------------------------------------------------------------- Peter Zijlstra (2): locking/atomics: Provide the arch_atomic_ interface to generic code rcu: Fixup noinstr warnings
include/linux/atomic-fallback.h | 236 +++++++++++++++++++++++++++++++++- include/linux/compiler.h | 2 +- kernel/rcu/tree.c | 32 ++++- scripts/atomic/gen-atomic-fallback.sh | 31 +++++ 4 files changed, 292 insertions(+), 9 deletions(-)
-- Regards/Gruss, Boris.
SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg
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