Hi Linus,
this patchset fixes and enforces correct section alignments for the ex_table,
altinstructions, parisc_unwind, jump_table and bug_table which are created by
inline assembly.
Due to not being correctly aligned at link & load time they can trigger
unnecessarily the kernel unaligned exception handler at runtime.
While at it, I switched the bug table to use relative addresses which reduces
the size of the table by half on 64-bit.
We still had the ENOSYM and EREMOTERELEASE errno symbols as left-overs from
HP-UX, which now trigger build-issues with glibc. We can simply remove them.
Most of the patches are tagged for stable kernel series.
Please pull.
Thanks!
Helge
----------------------------------------------------------------
The following changes since commit 98b1cc82c4affc16f5598d4fa14b1858671b2263:
Linux 6.7-rc2 (2023-11-19 15:02:14 -0800)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git tags/parisc-for-6.7-rc3
for you to fetch changes up to 43266838515d30dc0c45d5c7e6e7edacee6cce92:
parisc: Reduce size of the bug_table on 64-bit kernel by half (2023-11-25 09:43:18 +0100)
----------------------------------------------------------------
parisc architecture fixes for kernel v6.7-rc3:
- Drop HP-UX ENOSYM and EREMOTERELEASE return codes to avoid glibc
build issues
- Fix section alignments for ex_table, altinstructions, parisc unwind
table, jump_table and bug_table
- Reduce size of bug_table on 64-bit kernel by using relative
pointers
----------------------------------------------------------------
Helge Deller (9):
parisc: Mark ex_table entries 32-bit aligned in assembly.h
parisc: Mark ex_table entries 32-bit aligned in uaccess.h
parisc: Mark altinstructions read-only and 32-bit aligned
parisc: Mark jump_table naturally aligned
parisc: Mark lock_aligned variables 16-byte aligned on SMP
parisc: Ensure 32-bit alignment on parisc unwind section
parisc: Use natural CPU alignment for bug_table
parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes
parisc: Reduce size of the bug_table on 64-bit kernel by half
arch/parisc/Kconfig | 7 ++++--
arch/parisc/include/asm/alternative.h | 9 ++++---
arch/parisc/include/asm/assembly.h | 1 +
arch/parisc/include/asm/bug.h | 38 +++++++++++++++++-------------
arch/parisc/include/asm/jump_label.h | 8 +++++--
arch/parisc/include/asm/ldcw.h | 2 +-
arch/parisc/include/asm/uaccess.h | 1 +
arch/parisc/include/uapi/asm/errno.h | 2 --
arch/parisc/kernel/vmlinux.lds.S | 1 +
lib/errname.c | 6 -----
tools/arch/parisc/include/uapi/asm/errno.h | 2 --
11 files changed, 43 insertions(+), 34 deletions(-)
