From: catalin.marinas@arm•com (Catalin Marinas)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 22/24] ARM64:ILP32: Use a seperate syscall table as a few syscalls need to be using the compat syscalls.
Date: Tue, 1 Jul 2014 17:49:02 +0100 [thread overview]
Message-ID: <20140701164902.GT18313@arm.com> (raw)
In-Reply-To: <800835FF-E10A-4C0C-A68F-0ED1434F1CE2@caviumnetworks.com>
On Tue, Jul 01, 2014 at 04:30:51PM +0100, Pinski, Andrew wrote:
> On Jul 1, 2014, at 8:07 AM, "Catalin Marinas" <catalin.marinas@arm•com> wrote:
> > On Sat, May 24, 2014 at 12:02:17AM -0700, Andrew Pinski wrote:
> >> +/* Using Compat syscalls where necessary */
> >> +#define sys_ioctl compat_sys_ioctl
> >> +/* iovec */
> >> +#define sys_readv compat_sys_readv
> >> +#define sys_writev compat_sys_writev
> >> +#define sys_preadv compat_sys_preadv64
> >> +#define sys_pwritev compat_sys_pwritev64
> >> +#define sys_vmsplice compat_sys_vmsplice
> >
> > Do these actually work? compat_iovec has two members of 32-bit each
> > while the ILP32 iovec has a void * (32-bit) and a __kernel_size_t which
> > is 64-bit.
>
> size_t should be unsigned long in ilp32 so a 32bit unsigned integer
> type. That part of the abi was already defined in the arm abi
> documents. Now are saying we should pass size_t different between
> user and kernel space?
OK, I think you are right here. The ILP32 would not see __kernel_size_t
defined as __kernel_ulong_t because __BITS_PER_LONG != 64.
> >> +/* Pointer in struct */
> >> +#define sys_mount compat_sys_mount
> >
> > Which structure is this?
>
> NFS structure, I can expand out the comment if needed.
That would be good for future reference.
Thanks.
--
Catalin
next prev parent reply other threads:[~2014-07-01 16:49 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-24 7:01 [PATCHv2 00/24] ILP32 Support in ARM64 Andrew Pinski
2014-05-24 7:01 ` [PATCH 01/24] ARM64: Force LP64 to compile the kernel Andrew Pinski
2014-05-24 7:01 ` [PATCH 02/24] ARM64: Rename COMPAT to AARCH32_EL0 in Kconfig Andrew Pinski
2014-05-24 7:01 ` [PATCH 03/24] ARM64: Change some CONFIG_COMPAT over to use CONFIG_AARCH32_EL0 instead Andrew Pinski
2014-06-17 15:15 ` Catalin Marinas
2014-05-24 7:01 ` [PATCH 04/24] ARM64:ILP32: Set kernel_long to long long so we can reuse most of the same syscalls as LP64 Andrew Pinski
2014-05-24 7:02 ` [PATCH 05/24] ARM64:UAPI: Set the correct __BITS_PER_LONG for ILP32 Andrew Pinski
2014-06-17 15:22 ` Catalin Marinas
2014-06-17 15:29 ` Arnd Bergmann
2014-05-24 7:02 ` [PATCH 06/24] Allow for some signal structures to be the same between a 32bit ABI and the 64bit ABI Andrew Pinski
2014-06-17 15:43 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 07/24] ARM64:ILP32: Use the same size and layout of the signal structures for ILP32 as for LP64 Andrew Pinski
2014-06-17 15:58 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 08/24] Allow a 32bit ABI to use the naming of the 64bit ABI syscalls to avoid confusion of not splitting the registers Andrew Pinski
2014-06-17 16:22 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 09/24] ARM64:ILP32: Use the same syscall names as LP64 Andrew Pinski
2014-06-18 8:51 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 10/24] ARM64: Introduce is_a32_task and is_a32_thread. Use them in the correct locations Andrew Pinski
2014-06-18 17:47 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 11/24] ARM64: Add ARM64_ILP32 to Kconfig Andrew Pinski
2014-05-24 7:02 ` [PATCH 12/24] ARM64: Add is_ilp32_compat_task and is_ilp32_compat_thread and TIF_32BIT_AARCH64 Andrew Pinski
2014-06-19 12:49 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 13/24] Drivers:input: Use is_compat_task for ARM64 also Andrew Pinski
2014-06-19 12:50 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 14/24] ARM64:ILP32: COMPAT_USE_64BIT_TIME is true for ILP32 tasks Andrew Pinski
2014-06-19 12:52 ` Catalin Marinas
2014-05-24 7:02 ` [PATCH 15/24] ARM64:ILP32: Use the non compat HWCAP for ILP32 Andrew Pinski
2014-06-19 12:54 ` Catalin Marinas
2014-07-01 13:01 ` Dr. Philipp Tomsich
2014-05-24 7:02 ` [PATCH 16/24] ARM64:ILP32 use the standard start_thread for ILP32 so the processor state is not AARCH32 Andrew Pinski
2014-05-24 7:02 ` [PATCH 17/24] ARM64:ILP32: Support core dump for ILP32 Andrew Pinski
2014-05-24 7:02 ` [PATCH 18/24] ARM64: Add loading of ILP32 binaries Andrew Pinski
2014-05-24 7:02 ` [PATCH 19/24] ARM64: Add vdso for ILP32 and use it for the signal return Andrew Pinski
2014-05-24 7:02 ` [PATCH 20/24] ptrace: Allow compat to use the native siginfo Andrew Pinski
2014-05-24 7:02 ` [PATCH 21/24] ARM64:ILP32: The native siginfo is used instead of the compat siginfo Andrew Pinski
2014-05-24 18:56 ` H. Peter Anvin
2014-05-24 7:02 ` [PATCH 22/24] ARM64:ILP32: Use a seperate syscall table as a few syscalls need to be using the compat syscalls Andrew Pinski
2014-07-01 15:05 ` Catalin Marinas
2014-07-01 15:30 ` Pinski, Andrew
2014-07-01 16:38 ` Arnd Bergmann
2014-07-01 16:50 ` Catalin Marinas
2014-07-01 17:04 ` Arnd Bergmann
2014-07-01 16:49 ` Catalin Marinas [this message]
2014-05-24 7:02 ` [PATCH 23/24] ARM64:ILP32: Fix signal return for ILP32 when the user modified the signal stack Andrew Pinski
2014-05-24 7:02 ` [PATCH 24/24] Add documentation about ARM64 ILP32 ABI Andrew Pinski
2014-06-16 17:08 ` [PATCHv2 00/24] ILP32 Support in ARM64 Catalin Marinas
2014-06-16 17:19 ` Pinski, Andrew
2014-06-17 10:43 ` Catalin Marinas
2014-06-17 11:30 ` Pinski, Andrew
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