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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Kees Cook Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Simon Schuster X-Mailer: b4 0.14.3-dev-2ce6c X-Developer-Signature: v=1; a=ed25519-sha256; t=1755775663; l=2259; i=schuster.simon@siemens-energy.com; s=20250818; h=from:subject:message-id; bh=ZGFd7PEXdNZQ3XvGm96hBqrgf0z3Sn12r48TmNzThTY=; b=F2nKl2igsmfyyDF/eUV0oYb5mlZJyimIpk0NXRJVrpnKfItiOUjRR+lvhtzDMtKjVJKvuPs+u 3hz69QALEOGCg5dAKDF1klwR3WkvjnC1lV0TyZQ2blO79aj8xnAMWyK X-Developer-Key: i=schuster.simon@siemens-energy.com; a=ed25519; pk=PUhOMiSp43aSeRE1H41KApxYOluamBFFiMfKlBjocvo= X-Endpoint-Received: by B4 Relay for schuster.simon@siemens-energy.com/20250818 with auth_id=495 X-Original-From: Simon Schuster Reply-To: schuster.simon@siemens-energy.com X-Stat-Signature: 6wewjdyyq1jgk8414kdzr84nsbchox9w X-Rspam-User: X-Rspamd-Queue-Id: 61C764000E X-Rspamd-Server: rspam05 X-HE-Tag: 1755775666-796855 X-HE-Meta: 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 EYG/skJk 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Simon Schuster This commit adds the sys_clone3 entrypoint for nios2. An architecture-specific wrapper (__sys_clone3) is required to save and restore additional registers to the kernel stack via SAVE_SWITCH_STACK and RESTORE_SWITCH_STACK. Signed-off-by: Simon Schuster --- arch/nios2/include/asm/syscalls.h | 1 + arch/nios2/include/asm/unistd.h | 2 -- arch/nios2/kernel/entry.S | 6 ++++++ arch/nios2/kernel/syscall_table.c | 1 + 4 files changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/nios2/include/asm/syscalls.h b/arch/nios2/include/asm/syscalls.h index b4d4ed3bf9c8..0e214b0a0ac8 100644 --- a/arch/nios2/include/asm/syscalls.h +++ b/arch/nios2/include/asm/syscalls.h @@ -7,6 +7,7 @@ int sys_cacheflush(unsigned long addr, unsigned long len, unsigned int op); +asmlinkage long __sys_clone3(struct clone_args __user *uargs, size_t size); #include diff --git a/arch/nios2/include/asm/unistd.h b/arch/nios2/include/asm/unistd.h index 1146e56473c5..213f6de3cf7b 100644 --- a/arch/nios2/include/asm/unistd.h +++ b/arch/nios2/include/asm/unistd.h @@ -7,6 +7,4 @@ #define __ARCH_WANT_STAT64 #define __ARCH_WANT_SET_GET_RLIMIT -#define __ARCH_BROKEN_SYS_CLONE3 - #endif diff --git a/arch/nios2/kernel/entry.S b/arch/nios2/kernel/entry.S index 99f0a65e6234..dd40dfd908e5 100644 --- a/arch/nios2/kernel/entry.S +++ b/arch/nios2/kernel/entry.S @@ -403,6 +403,12 @@ ENTRY(sys_clone) addi sp, sp, 4 RESTORE_SWITCH_STACK ret +/* long syscall(SYS_clone3, struct clone_args *cl_args, size_t size); */ +ENTRY(__sys_clone3) + SAVE_SWITCH_STACK + call sys_clone3 + RESTORE_SWITCH_STACK + ret ENTRY(sys_rt_sigreturn) SAVE_SWITCH_STACK diff --git a/arch/nios2/kernel/syscall_table.c b/arch/nios2/kernel/syscall_table.c index 434694067d8f..c99818aac9e1 100644 --- a/arch/nios2/kernel/syscall_table.c +++ b/arch/nios2/kernel/syscall_table.c @@ -13,6 +13,7 @@ #define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native) #define sys_mmap2 sys_mmap_pgoff +#define sys_clone3 __sys_clone3 void *sys_call_table[__NR_syscalls] = { [0 ... __NR_syscalls-1] = sys_ni_syscall, -- 2.39.5