From: Christian Brauner <christian.brauner@ubuntu.com>
To: linux-kernel@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Christian Brauner <christian.brauner@ubuntu.com>,
"David S . Miller" <davem@davemloft.net>,
Arnd Bergmann <arnd@arndb.de>, Guo Ren <guoren@kernel.org>,
linux-csky@vger.kernel.org, sparclinux@vger.kernel.org
Subject: [PATCH 04/17] sparc: unconditionally enable HAVE_COPY_THREAD_TLS
Date: Tue, 23 Jun 2020 01:43:13 +0200 [thread overview]
Message-ID: <20200622234326.906346-5-christian.brauner@ubuntu.com> (raw)
In-Reply-To: <20200622234326.906346-1-christian.brauner@ubuntu.com>
Now that both sparc and sparc64 support copy_thread_tls() and don't rely
on do_fork() anymore, turn on HAVE_COPY_THREAD_TLS unconditionally. Once
all architectures are switched over this macro will be removed and
the old do_fork() calling convention fully abandoned in favor of the
cleaner struct kernel_clone_args one.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guo Ren <guoren@kernel.org>
Cc: linux-csky@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Link: https://lore.kernel.org/r/20200512171527.570109-4-christian.brauner@ubuntu.com
---
arch/sparc/Kconfig | 2 +-
arch/sparc/kernel/process_32.c | 7 ++++---
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index e2bb4956e130..66213c0cb557 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -48,6 +48,7 @@ config SPARC
select LOCKDEP_SMALL if LOCKDEP
select NEED_DMA_MAP_STATE
select NEED_SG_DMA_LENGTH
+ select HAVE_COPY_THREAD_TLS
config SPARC32
def_bool !64BIT
@@ -94,7 +95,6 @@ config SPARC64
select ARCH_HAS_PTE_SPECIAL
select PCI_DOMAINS if PCI
select ARCH_HAS_GIGANTIC_PAGE
- select HAVE_COPY_THREAD_TLS
config ARCH_PROC_KCORE_TEXT
def_bool y
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index 229a10bab74a..3e1f7b639e9a 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -273,8 +273,9 @@ clone_stackframe(struct sparc_stackf __user *dst,
extern void ret_from_fork(void);
extern void ret_from_kernel_thread(void);
-int copy_thread(unsigned long clone_flags, unsigned long sp,
- unsigned long arg, struct task_struct *p)
+int copy_thread_tls(unsigned long clone_flags, unsigned long sp,
+ unsigned long arg, struct task_struct *p,
+ unsigned long tls)
{
struct thread_info *ti = task_thread_info(p);
struct pt_regs *childregs, *regs = current_pt_regs();
@@ -376,7 +377,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
regs->u_regs[UREG_I1] = 0;
if (clone_flags & CLONE_SETTLS)
- childregs->u_regs[UREG_G7] = regs->u_regs[UREG_I3];
+ childregs->u_regs[UREG_G7] = tls;
return 0;
}
--
2.27.0
next prev parent reply other threads:[~2020-06-22 23:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-22 23:43 [PATCH 00/17] arch: remove do_fork() and HAVE_COPY_THREAD_TLS Christian Brauner
2020-06-22 23:43 ` [PATCH 01/17] fork: fold legacy_clone_args_valid() into _do_fork() Christian Brauner
[not found] ` <20200627082748.GM5535@shao2-debian>
2020-06-27 12:23 ` [fork] 11689456e6: ltp.clone302.fail Christian Brauner
2020-06-22 23:43 ` [PATCH 02/17] sparc64: enable HAVE_COPY_THREAD_TLS Christian Brauner
2020-06-23 3:35 ` David Miller
2020-06-23 8:42 ` Christian Brauner
2020-06-22 23:43 ` [PATCH 03/17] sparc: share process creation helpers between sparc and sparc64 Christian Brauner
2020-06-22 23:43 ` Christian Brauner [this message]
2020-06-22 23:43 ` [PATCH 05/17] ia64: enable HAVE_COPY_THREAD_TLS, switch to kernel_clone_args Christian Brauner
2020-06-22 23:43 ` [PATCH 06/17] nios2: " Christian Brauner
2020-06-22 23:43 ` [PATCH 07/17] h8300: select " Christian Brauner
2020-06-22 23:43 ` [PATCH 08/17] fork: remove do_fork() Christian Brauner
2020-06-22 23:43 ` [PATCH 09/17] alpha: switch to copy_thread_tls() Christian Brauner
2020-06-22 23:43 ` [PATCH 10/17] c6x: " Christian Brauner
2020-06-22 23:43 ` [PATCH 11/17] hexagon: " Christian Brauner
2020-06-23 16:11 ` Brian Cain
2020-06-22 23:43 ` [PATCH 12/17] microblaze: " Christian Brauner
2020-06-22 23:43 ` [PATCH 13/17] nds32: " Christian Brauner
2020-06-22 23:43 ` [PATCH 14/17] sh: " Christian Brauner
2020-06-22 23:43 ` [PATCH 15/17] unicore: " Christian Brauner
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