| eb35bdd7bca29a13c8ecd44e6fd747a84ce675db |
|
11-Sep-2014 |
Will Deacon <will.deacon@arm.com> |
arm64: flush TLS registers during exec
Nathan reports that we leak TLS information from the parent context
during an exec, as we don't clear the TLS registers when flushing the
thread state.
This patch updates the flushing code so that we:
(1) Unconditionally zero the tpidr_el0 register (since this is fully
context switched for native tasks and zeroed for compat tasks)
(2) Zero the tp_value state in thread_info before clearing the
tpidrr0_el0 register for compat tasks (since this is only writable
by the set_tls compat syscall and therefore not fully switched).
A missing compiler barrier is also added to the compat set_tls syscall.
Cc: <stable@vger.kernel.org>
Acked-by: Nathan Lynch <Nathan_Lynch@mentor.com>
Reported-by: Nathan Lynch <Nathan_Lynch@mentor.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
|
| f3e5c847ec3d12b4de7898662024ee25622b25d7 |
|
30-Jan-2014 |
Catalin Marinas <catalin.marinas@arm.com> |
arm64: Add __NR_* definitions for compat syscalls
This patch adds __NR_* definitions to asm/unistd32.h, moves the
__NR_compat_* definitions to asm/unistd.h and removes all the explicit
unistd32.h includes apart from the one building the compat syscall
table. The aim is to have the compat __NR_* definitions available but
without colliding with the native syscall definitions (required by
lib/compat_audit.c to avoid duplicating the audit header files between
native and compat).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
| 0ad50c3896afbb3c103409a18260e601b87a744c |
|
18-Dec-2012 |
Catalin Marinas <catalin.marinas@arm.com> |
compat: generic compat_sys_sched_rr_get_interval() implementation
This function is used by sparc, powerpc tile and arm64 for compat support.
The patch adds a generic implementation with a wrapper for PowerPC to do
the u32->int sign extension.
The reason for a single patch covering powerpc, tile, sparc and arm64 is
to keep it bisectable, otherwise kernel building may fail with mismatched
function declarations.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com> [for tile]
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| 9ac08002130b591d0f2ee035aa9062f84f2f15cb |
|
21-Oct-2012 |
Al Viro <viro@zeniv.linux.org.uk> |
arm64: sanitize copy_thread(), switch to generic fork/vfork/clone
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
| e0fd18ce1169595df929373cad2ae9b00b2289c2 |
|
18-Oct-2012 |
Al Viro <viro@zeniv.linux.org.uk> |
arm64: get rid of fork/vfork/clone wrappers
[fixes from Catalin Marinas folded]
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
| 6a872777ffff6184f4ac10bd71d926d5e6f2491e |
|
10-Sep-2012 |
Catalin Marinas <catalin.marinas@arm.com> |
arm64: Use generic sys_execve() implementation
This patch converts the arm64 port to use the generic sys_execve()
implementation removing the arm64-specific (compat_)sys_execve_wrapper()
functions.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
| 91a27b2a756784714e924e5e854b919273082d26 |
|
10-Oct-2012 |
Jeff Layton <jlayton@redhat.com> |
vfs: define struct filename and have getname() return it
getname() is intended to copy pathname strings from userspace into a
kernel buffer. The result is just a string in kernel space. It would
however be quite helpful to be able to attach some ancillary info to
the string.
For instance, we could attach some audit-related info to reduce the
amount of audit-related processing needed. When auditing is enabled,
we could also call getname() on the string more than once and not
need to recopy it from userspace.
This patchset converts the getname()/putname() interfaces to return
a struct instead of a string. For now, the struct just tracks the
string in kernel space and the original userland pointer for it.
Later, we'll add other information to the struct as it becomes
convenient.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
| f3d447a97f24f7c1e14767e1974b8e5bc219bc07 |
|
10-Oct-2012 |
Catalin Marinas <catalin.marinas@arm.com> |
arm64: Do not include asm/unistd32.h in asm/unistd.h
This patch only includes asm/unistd32.h where necessary and removes its
inclusion in the asm/unistd.h file. The __SYSCALL_COMPAT guard is
dropped.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
|
| e048d004a5392e3d6d78b0a53335391f87d724ec |
|
03-Oct-2012 |
Catalin Marinas <catalin.marinas@arm.com> |
arm64: Use the generic compat_sys_sendfile() implementation
The generic implementation of compat_sys_sendfile() has been introduced
by commit 8f9c0119. This patch removes the arm64 implementation in
favour of the generic one.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
| 3dd681d944f6d861f12ee03aff17a14342963330 |
|
05-Mar-2012 |
Will Deacon <will.deacon@arm.com> |
arm64: 32-bit (compat) applications support
This patch adds support for 32-bit applications. The vectors page is a
binary blob mapped into the application user space at 0xffff0000 (the
AArch64 toolchain does not support compilation of AArch32 code). Full
compatibility with ARMv7 user space is supported. The use of deprecated
ARMv7 functionality (SWP, CP15 barriers) has been disabled by default on
AArch64 kernels and unaligned LDM/STM is not supported.
Please note that only the ARM 32-bit EABI is supported, so no OABI
compatibility.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
|