[PATCH 0/2] arch: Sync all syscall tables with 2 newly added system calls

* [PATCH 0/2] arch: Sync all syscall tables with 2 newly added system calls
@ 2023-09-11 18:02 Sohil Mehta
  2023-09-11 18:02 ` [PATCH 1/2] tools headers UAPI: Sync fchmodat2() syscall table entries Sohil Mehta
                   ` (2 more replies)
  0 siblings, 3 replies; 8+ messages in thread
From: Sohil Mehta @ 2023-09-11 18:02 UTC (permalink / raw)
  To: linux-kernel, linux-api, linux-arch
  Cc: Sohil Mehta, Richard Henderson, Ivan Kokshaysky, Matt Turner,
	Russell King, Catalin Marinas, Will Deacon, Geert Uytterhoeven,
	Michal Simek, Thomas Bogendoerfer, James E . J . Bottomley,
	Helge Deller, Michael Ellerman, Nicholas Piggin,
	Christophe Leroy, Heiko Carstens, Vasily Gorbik,
	Alexander Gordeev, Christian Borntraeger, Sven Schnelle,
	Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz,
	David S . Miller, Andy Lutomirski, Thomas Gleixner, Ingo Molnar,
	Borislav Petkov, Dave Hansen, x86, H . Peter Anvin, Chris Zankel,
	Max Filippov, Arnd Bergmann, Peter Zijlstra,
	Arnaldo Carvalho de Melo, Mark Rutland, Alexander Shishkin,
	Jiri Olsa, Namhyung Kim, Ian Rogers, Adrian Hunter,
	Lukas Bulwahn, Sergei Trofimovich, Andrew Morton, Rohan McLure,
	Andreas Schwab, Eric W . Biederman, Brian Gerst, Randy Dunlap,
	Rick Edgecombe, Mark Brown, Deepak Gupta, linux-alpha,
	linux-arm-kernel, linux-ia64, linux-m68k, linux-mips,
	linux-parisc, linuxppc-dev, linux-s390, linux-sh, sparclinux,
	linux-perf-users

6.6-rc1 has added support for 2 new system calls:
[1] fchmodat2()
[2] x86-specific map_shadow_stack()

This series mainly synchronizes the syscall tables arcoss the core kernel and
tools to reflect the recent updates.

For fchmodat2(), it fixes the missing entries in the tools directory.

For map_shadow_stack(), it reserves the syscall across the board. Since
map_shadow_stack() is x86 specific for now, it is marked as a conditional
syscall in sys_ni.c. Adding it to the syscall tables of other architectures is
harmless and would return ENOSYS when exercised.

Reserving arch-specific syscall numbers in the tables of all architectures is
good practice and would help avoid future conflicts.

[1]: https://lore.kernel.org/lkml/20230824-frohlocken-vorabend-725f6fdaad50@brauner/
[2]: https://lore.kernel.org/lkml/20230830234752.19858-1-dave.hansen@linux.intel.com/

Sohil Mehta (2):
  tools headers UAPI: Sync fchmodat2() syscall table entries
  arch: Reserve map_shadow_stack() syscall number for all architectures

 arch/alpha/kernel/syscalls/syscall.tbl              | 1 +
 arch/arm/tools/syscall.tbl                          | 1 +
 arch/arm64/include/asm/unistd.h                     | 2 +-
 arch/arm64/include/asm/unistd32.h                   | 2 ++
 arch/ia64/kernel/syscalls/syscall.tbl               | 1 +
 arch/m68k/kernel/syscalls/syscall.tbl               | 1 +
 arch/microblaze/kernel/syscalls/syscall.tbl         | 1 +
 arch/mips/kernel/syscalls/syscall_n32.tbl           | 1 +
 arch/mips/kernel/syscalls/syscall_n64.tbl           | 1 +
 arch/mips/kernel/syscalls/syscall_o32.tbl           | 1 +
 arch/parisc/kernel/syscalls/syscall.tbl             | 1 +
 arch/powerpc/kernel/syscalls/syscall.tbl            | 1 +
 arch/s390/kernel/syscalls/syscall.tbl               | 1 +
 arch/sh/kernel/syscalls/syscall.tbl                 | 1 +
 arch/sparc/kernel/syscalls/syscall.tbl              | 1 +
 arch/x86/entry/syscalls/syscall_32.tbl              | 1 +
 arch/xtensa/kernel/syscalls/syscall.tbl             | 1 +
 include/uapi/asm-generic/unistd.h                   | 5 ++++-
 tools/include/uapi/asm-generic/unistd.h             | 8 +++++++-
 tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl | 2 ++
 tools/perf/arch/powerpc/entry/syscalls/syscall.tbl  | 2 ++
 tools/perf/arch/s390/entry/syscalls/syscall.tbl     | 2 ++
 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl   | 2 ++
 23 files changed, 37 insertions(+), 3 deletions(-)

base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d
-- 
2.34.1

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