[PATCH] Documentation/powerpc: fix malformed table in syscall64-abi

[PATCH] Documentation/powerpc: fix malformed table in syscall64-abi

[Randy Dunlap]

From: Randy Dunlap <rdunlap@infradead.org>

Fix malformed table warning in powerpc/syscall64-abi.rst by making
two tables and moving the headings.

Documentation/powerpc/syscall64-abi.rst:53: WARNING: Malformed table.
Text in column margin in table line 2.

=========== ============= ========================================
--- For the sc instruction, differences with the ELF ABI ---
r0          Volatile      (System call number.)
r3          Volatile      (Parameter 1, and return value.)
r4-r8       Volatile      (Parameters 2-6.)
cr0         Volatile      (cr0.SO is the return error condition.)
cr1, cr5-7  Nonvolatile
lr          Nonvolatile

--- For the scv 0 instruction, differences with the ELF ABI ---
r0          Volatile      (System call number.)
r3          Volatile      (Parameter 1, and return value.)
r4-r8       Volatile      (Parameters 2-6.)
=========== ============= ========================================

Fixes: 7fa95f9adaee ("powerpc/64s: system call support for scv/rfscv instructions")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
---
 Documentation/powerpc/syscall64-abi.rst |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- lnx-59-rc2.orig/Documentation/powerpc/syscall64-abi.rst
+++ lnx-59-rc2/Documentation/powerpc/syscall64-abi.rst
@@ -49,16 +49,18 @@ Register preservation rules
 Register preservation rules match the ELF ABI calling sequence with the
 following differences:
 
-=========== ============= ========================================
 --- For the sc instruction, differences with the ELF ABI ---
+=========== ============= ========================================
 r0          Volatile      (System call number.)
 r3          Volatile      (Parameter 1, and return value.)
 r4-r8       Volatile      (Parameters 2-6.)
 cr0         Volatile      (cr0.SO is the return error condition.)
 cr1, cr5-7  Nonvolatile
 lr          Nonvolatile
+=========== ============= ========================================
 
 --- For the scv 0 instruction, differences with the ELF ABI ---
+=========== ============= ========================================
 r0          Volatile      (System call number.)
 r3          Volatile      (Parameter 1, and return value.)
 r4-r8       Volatile      (Parameters 2-6.)

Re: [PATCH] Documentation/powerpc: fix malformed table in syscall64-abi

[Michael Ellerman]

On Sun, 23 Aug 2020 17:31:16 -0700, Randy Dunlap wrote:
> Fix malformed table warning in powerpc/syscall64-abi.rst by making
> two tables and moving the headings.
> 
> Documentation/powerpc/syscall64-abi.rst:53: WARNING: Malformed table.
> Text in column margin in table line 2.
> 
> =========== ============= ========================================
> --- For the sc instruction, differences with the ELF ABI ---
> r0          Volatile      (System call number.)
> r3          Volatile      (Parameter 1, and return value.)
> r4-r8       Volatile      (Parameters 2-6.)
> cr0         Volatile      (cr0.SO is the return error condition.)
> cr1, cr5-7  Nonvolatile
> lr          Nonvolatile
> 
> [...]

Applied to powerpc/fixes.

[1/1] Documentation/powerpc: fix malformed table in syscall64-abi
      https://git.kernel.org/powerpc/c/aa661d7fab436d8a782618b3138da1a84ca28a31

cheers