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MIPS: Wire up clone3 syscall

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Wire up the new clone3 syscall for MIPS, using save_static_function() to
generate a wrapper that saves registers $s0-$s7 prior to invoking the
generic sys_clone3 function just like we do for plain old clone.

Tested atop 64r6el_defconfig using o32, n32 & n64 builds of the simple
test program from:

  https://lore.kernel.org/lkml/20190716130631.tohj4ub54md25dys@brauner.io/

Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Christian Brauner <christian@brauner.io>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Cc: linux-mips@vger.kernel.org
This commit is contained in:
Paul Burton
2019-10-02 18:59:49 +00:00
parent 0228ecf612
commit 0671c5b84e
5 changed files with 5 additions and 3 deletions
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2
arch/mips/kernel/syscalls/syscall_n32.tbl
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@@ -373,4 +373,4 @@
432 n32 fsmount sys_fsmount
433 n32 fspick sys_fspick
434 n32 pidfd_open sys_pidfd_open
# 435 reserved for clone3
435 n32 clone3 __sys_clone3

2
arch/mips/kernel/syscalls/syscall_n64.tbl
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@@ -349,4 +349,4 @@
432 n64 fsmount sys_fsmount
433 n64 fspick sys_fspick
434 n64 pidfd_open sys_pidfd_open
# 435 reserved for clone3
435 n64 clone3 __sys_clone3

2
arch/mips/kernel/syscalls/syscall_o32.tbl
View File

@@ -422,4 +422,4 @@
432 o32 fsmount sys_fsmount
433 o32 fspick sys_fspick
434 o32 pidfd_open sys_pidfd_open
# 435 reserved for clone3
435 o32 clone3 __sys_clone3