| From: |
| "Christophe Leroy (CS GROUP)" <chleroy-AT-kernel.org> |
| To: |
| Michael Ellerman <mpe-AT-ellerman.id.au>, Nicholas Piggin <npiggin-AT-gmail.com>, Madhavan Srinivasan <maddy-AT-linux.ibm.com> |
| Subject: |
| [PATCH v1 0/8] powerpc/signal: Convert to scoped user access |
| Date: |
| Fri, 22 May 2026 11:56:00 +0200 |
| Message-ID: |
| <cover.1779441786.git.chleroy@kernel.org> |
| Cc: |
| "Christophe Leroy (CS GROUP)" <chleroy-AT-kernel.org>, linux-kernel-AT-vger.kernel.org, linuxppc-dev-AT-lists.ozlabs.org |
| Archive-link: |
| Article |
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/1718f38859d5366f82d5bef531f25...
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 | 120 +++----
include/linux/signal.h | 15 +
include/linux/uaccess.h | 1 +
kernel/signal.c | 5 -
6 files changed, 323 insertions(+), 336 deletions(-)
--
2.54.0
