2020-08-24 00:34:57

by Randy Dunlap

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

From: Randy Dunlap <[email protected]>

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 <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Michael Ellerman <[email protected]>
---
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.)

2020-08-27 07:48:25

by Michael Ellerman

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

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