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Subject[PATCH 12/17] microblaze: switch to copy_thread_tls()
Date
Use the copy_thread_tls() calling convention which passes tls through a
register. This is required so we can remove the copy_thread{_tls}() split
and remove the HAVE_COPY_THREAD_TLS macro.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
arch/microblaze/Kconfig | 1 +
arch/microblaze/kernel/process.c | 6 +++---
2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index d262ac0c8714..e3a211a41880 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -46,6 +46,7 @@ config MICROBLAZE
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE if MMU
select SPARSE_IRQ
+ select HAVE_COPY_THREAD_TLS

# Endianness selection
choice
diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index 6527ec22f158..c2ca9c326510 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -54,8 +54,8 @@ void flush_thread(void)
{
}

-int copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p)
+int copy_thread_tls(unsigned long clone_flags, unsigned long usp,
+ unsigned long arg, struct task_struct *p, unsigned long tls)
{
struct pt_regs *childregs = task_pt_regs(p);
struct thread_info *ti = task_thread_info(p);
@@ -114,7 +114,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
* which contains TLS area
*/
if (clone_flags & CLONE_SETTLS)
- childregs->r21 = childregs->r10;
+ childregs->r21 = tls;

return 0;
}
--
2.27.0
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