diff options
| -rw-r--r-- | arch/arm64/include/asm/sigcontext.h | 31 | ||||
| -rw-r--r-- | arch/arm64/kernel/signal.c | 27 |
2 files changed, 17 insertions, 41 deletions
diff --git a/arch/arm64/include/asm/sigcontext.h b/arch/arm64/include/asm/sigcontext.h deleted file mode 100644 index dca1094acc7..00000000000 --- a/arch/arm64/include/asm/sigcontext.h +++ /dev/null @@ -1,31 +0,0 @@ -/* - * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ -#ifndef __ASM_SIGCONTEXT_H -#define __ASM_SIGCONTEXT_H - -#include <uapi/asm/sigcontext.h> - -/* - * Auxiliary context saved in the sigcontext.__reserved array. Not exported to - * user space as it will change with the addition of new context. User space - * should check the magic/size information. - */ -struct aux_context { - struct fpsimd_context fpsimd; - /* additional context to be added before "end" */ - struct _aarch64_ctx end; -}; -#endif diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index 890a591f75d..7ff2eee96c6 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -100,8 +100,7 @@ static int restore_sigframe(struct pt_regs *regs, { sigset_t set; int i, err; - struct aux_context __user *aux = - (struct aux_context __user *)sf->uc.uc_mcontext.__reserved; + void *aux = sf->uc.uc_mcontext.__reserved; err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set)); if (err == 0) @@ -121,8 +120,11 @@ static int restore_sigframe(struct pt_regs *regs, err |= !valid_user_regs(®s->user_regs); - if (err == 0) - err |= restore_fpsimd_context(&aux->fpsimd); + if (err == 0) { + struct fpsimd_context *fpsimd_ctx = + container_of(aux, struct fpsimd_context, head); + err |= restore_fpsimd_context(fpsimd_ctx); + } return err; } @@ -167,8 +169,8 @@ static int setup_sigframe(struct rt_sigframe __user *sf, struct pt_regs *regs, sigset_t *set) { int i, err = 0; - struct aux_context __user *aux = - (struct aux_context __user *)sf->uc.uc_mcontext.__reserved; + void *aux = sf->uc.uc_mcontext.__reserved; + struct _aarch64_ctx *end; /* set up the stack frame for unwinding */ __put_user_error(regs->regs[29], &sf->fp, err); @@ -185,12 +187,17 @@ static int setup_sigframe(struct rt_sigframe __user *sf, err |= __copy_to_user(&sf->uc.uc_sigmask, set, sizeof(*set)); - if (err == 0) - err |= preserve_fpsimd_context(&aux->fpsimd); + if (err == 0) { + struct fpsimd_context *fpsimd_ctx = + container_of(aux, struct fpsimd_context, head); + err |= preserve_fpsimd_context(fpsimd_ctx); + aux += sizeof(*fpsimd_ctx); + } /* set the "end" magic */ - __put_user_error(0, &aux->end.magic, err); - __put_user_error(0, &aux->end.size, err); + end = aux; + __put_user_error(0, &end->magic, err); + __put_user_error(0, &end->size, err); return err; } |