linux-kernel - [PATCH 00/10] Convert signal32 to user read access by block

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Message-Id: <cover.1616151715.git.christophe.leroy@csgroup.eu>
Date:   Fri, 19 Mar 2021 11:06:49 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>, cmr@...efail.de
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arch@...r.kernel.org
Subject: [PATCH 00/10] Convert signal32 to user read access by block

Similarly to the work done earlier with writes, this series
converts signal32 to using user_read_access_begin/end and
unsafe_get_user() and friends.

Applies on to of the signal64 series, ie on merge-test (ca6e327fefb2)

Christophe Leroy (10):
  signal: Add unsafe_get_compat_sigset()
  powerpc/uaccess: Also perform 64 bits copies in
    unsafe_copy_from_user() on ppc32
  powerpc/signal: Add unsafe_copy_ck{fpr/vsx}_from_user
  powerpc/signal32: Rename save_user_regs_unsafe() and
    save_general_regs_unsafe()
  powerpc/signal32: Remove ifdefery in middle of if/else in sigreturn()
  powerpc/signal32: Perform access_ok() inside restore_user_regs()
  powerpc/signal32: Reorder user reads in restore_tm_user_regs()
  powerpc/signal32: Convert restore_[tm]_user_regs() to user access
    block
  powerpc/signal32: Convert do_setcontext[_tm]() to user access block
  powerpc/signal32: Simplify logging in sigreturn()

 arch/powerpc/include/asm/ptrace.h  |   2 +-
 arch/powerpc/include/asm/uaccess.h |   6 +-
 arch/powerpc/kernel/signal.h       |  22 +++
 arch/powerpc/kernel/signal_32.c    | 251 ++++++++++++++++-------------
 include/linux/compat.h             |  35 ++++
 include/linux/uaccess.h            |   1 +
 6 files changed, 205 insertions(+), 112 deletions(-)

-- 
2.25.0