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Re: [Qemu-devel] [PATCH v2 04/28] linux-user: Define TARGET_ERESTART* er
From: |
Laurent Vivier |
Subject: |
Re: [Qemu-devel] [PATCH v2 04/28] linux-user: Define TARGET_ERESTART* errno values |
Date: |
Tue, 24 May 2016 11:42:44 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.0 |
Le 12/05/2016 à 19:47, Peter Maydell a écrit :
> From: Timothy E Baldwin <address@hidden>
>
> Define TARGET_ERESTARTSYS; like the kernel, we will use this to
> indicate that a guest system call should be restarted. We use
> the same value the kernel does for this, 512.
>
> Signed-off-by: Timothy Edward Baldwin <address@hidden>
> [PMM: split out from the patch which moves and renumbers
> TARGET_QEMU_ESIGRETURN, add comment on usage]
> Reviewed-by: Peter Maydell <address@hidden>
> Signed-off-by: Peter Maydell <address@hidden>
Reviewed-by: Laurent Vivier <address@hidden>
> ---
> linux-user/errno_defs.h | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/linux-user/errno_defs.h b/linux-user/errno_defs.h
> index 8a1cf76..b7a8c9f 100644
> --- a/linux-user/errno_defs.h
> +++ b/linux-user/errno_defs.h
> @@ -139,3 +139,11 @@
> /* for robust mutexes */
> #define TARGET_EOWNERDEAD 130 /* Owner died */
> #define TARGET_ENOTRECOVERABLE 131 /* State not recoverable */
> +
> +/* QEMU internal, not visible to the guest. This is returned when a
> + * system call should be restarted, to tell the main loop that it
> + * should wind the guest PC backwards so it will re-execute the syscall
> + * after handling any pending signals. They match with the ones the guest
> + * kernel uses for the same purpose.
> + */
> +#define TARGET_ERESTARTSYS 512 /* Restart system call (if
> SA_RESTART) */
>
- [Qemu-devel] [PATCH v2 17/28] linux-user: Support for restarting system calls for CRIS targets, (continued)
- [Qemu-devel] [PATCH v2 17/28] linux-user: Support for restarting system calls for CRIS targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 15/28] linux-user: Support for restarting system calls for M68K targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 01/28] linux-user: Check array bounds in errno conversion, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 18/28] linux-user: Support for restarting system calls for tilegx targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 20/28] linux-user: Support for restarting system calls for Microblaze targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 25/28] linux-user: Use safe_syscall for wait system calls, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 07/28] linux-user: Support for restarting system calls for ARM targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 13/28] linux-user: Support for restarting system calls for UniCore32 targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 04/28] linux-user: Define TARGET_ERESTART* errno values, Peter Maydell, 2016/05/12
- Re: [Qemu-devel] [PATCH v2 04/28] linux-user: Define TARGET_ERESTART* errno values,
Laurent Vivier <=
- [Qemu-devel] [PATCH v2 22/28] linux-user: Provide safe_syscall for fixing races between signals and syscalls, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 06/28] linux-user: Support for restarting system calls for x86 targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 02/28] linux-user: Consistently return host errnos from do_openat(), Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 27/28] linux-user: Use safe_syscall for pselect, select syscalls, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 24/28] linux-user: Use safe_syscall for open and openat system calls, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 14/28] linux-user: Support for restarting system calls for OpenRISC targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 19/28] linux-user: Set r14 on exit from microblaze syscall, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 12/28] linux-user: Support for restarting system calls for Alpha targets, Peter Maydell, 2016/05/12
- [Qemu-devel] [PATCH v2 23/28] linux-user: Use safe_syscall for read and write system calls, Peter Maydell, 2016/05/12