Le 02/06/2026 à 10:46, Christophe Leroy (CS GROUP) a écrit :
This series converts powerpc architecture signal handling to scoped
user access and enlarges some of the block accesses to minimise the
number of times user access has to be opened and closed.
As mentioned in individual patches, some bring real performance
improvement.
This series is built from previous series [1] which predates
implementation of scoped user access.
[1]
https://lore.kernel.org/all/1718f38859d5366f82d5bef531f255cedf537b5d.1631861883.git.christophe.le...@csgroup.eu/T/#t
Sashiko made relevant comments, I need to rework this series.
Changes in v2:
- Add a stub setup_tm_sigcontexts() for when CONFIG_PPC_TRANSACTIONAL_MEM is
not set in patch 2
Christophe Leroy (CS GROUP) (8):
powerpc/signal32: Convert to scoped user access
powerpc/signal64: Untangle setup_tm_sigcontexts() and
user_access_begin()
powerpc/signal64: Convert to scoped user access
powerpc/signal64: Access function descriptor with scoped user access
powerpc/signal: Include the new stack frame inside the user access
block
signal: Add unsafe_copy_siginfo_to_user()
powerpc/uaccess: Add unsafe_clear_user()
powerpc/signal: Use unsafe_copy_siginfo_to_user()
arch/powerpc/include/asm/uaccess.h | 20 ++
arch/powerpc/kernel/signal_32.c | 498 ++++++++++++++---------------
arch/powerpc/kernel/signal_64.c | 138 ++++----
include/linux/signal.h | 15 +
include/linux/uaccess.h | 1 +
kernel/signal.c | 5 -
6 files changed, 334 insertions(+), 343 deletions(-)
--
pw-bot: cr
