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2014-12-12powerpc: add little endian flag to syscall_get_arch()Richard Guy Briggs
Since both ppc and ppc64 have LE variants which are now reported by uname, add that flag (__AUDIT_ARCH_LE) to syscall_get_arch() and add AUDIT_ARCH_PPC64LE variant. Without this, perf trace and auditctl fail. Mainline kernel reports ppc64le (per a058801) but there is no matching AUDIT_ARCH_PPC64LE. Since 32-bit PPC LE is not supported by audit, don't advertise it in AUDIT_ARCH_PPC* variants. See: https://www.redhat.com/archives/linux-audit/2014-August/msg00082.html https://www.redhat.com/archives/linux-audit/2014-December/msg00004.html Signed-off-by: Richard Guy Briggs <rgb@redhat.com> Acked-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull more powerpc updates from Michael Ellerman: "Here's some more updates for powerpc for 3.18. They are a bit late I know, though must are actually bug fixes. In my defence I nearly cut the top of my finger off last weekend in a gruesome bike maintenance accident, so I spent a good part of the week waiting around for doctors. True story, I can send photos if you like :) Probably the most interesting fix is the sys_call_table one, which enables syscall tracing for powerpc. There's a fix for HMI handling for old firmware, more endian fixes for firmware interfaces, more EEH fixes, Anton fixed our routine that gets the current stack pointer, and a few other misc bits" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (22 commits) powerpc: Only do dynamic DMA zone limits on platforms that need it powerpc: sync pseries_le_defconfig with pseries_defconfig powerpc: Add printk levels to setup_system output powerpc/vphn: NUMA node code expects big-endian powerpc/msi: Use WARN_ON() in msi bitmap selftests powerpc/msi: Fix the msi bitmap alignment tests powerpc/eeh: Block CFG upon frozen Shiner adapter powerpc/eeh: Don't collect logs on PE with blocked config space powerpc/eeh: Block PCI config access upon frozen PE powerpc/pseries: Drop config requests in EEH accessors powerpc/powernv: Drop config requests in EEH accessors powerpc/eeh: Rename flag EEH_PE_RESET to EEH_PE_CFG_BLOCKED powerpc/eeh: Fix condition for isolated state powerpc/pseries: Make CPU hotplug path endian safe powerpc/pseries: Use dump_stack instead of show_stack powerpc: Rename __get_SP() to current_stack_pointer() powerpc: Reimplement __get_SP() as a function not a define powerpc/numa: Add ability to disable and debug topology updates powerpc/numa: check error return from proc_create powerpc/powernv: Fallback to old HMI handling behavior for old firmware ...
2014-10-10powerpc: Fix sys_call_table declaration to enable syscall tracingRomeo Cane
Declaring sys_call_table as a pointer causes the compiler to generate the wrong lookup code in arch_syscall_addr(). <arch_syscall_addr>: lis r9,-16384 rlwinm r3,r3,2,0,29 - lwz r11,30640(r9) - lwzx r3,r11,r3 + addi r9,r9,30640 + lwzx r3,r9,r3 blr The actual sys_call_table symbol, declared in assembler, is an array. If we lie about that to the compiler we get the wrong code generated, as above. This definition seems only to be used by the syscall tracing code in kernel/trace/trace_syscalls.c. With this patch I can successfully use the syscall tracepoints: bash-3815 [002] .... 333.239082: sys_write -> 0x2 bash-3815 [002] .... 333.239087: sys_dup2(oldfd: a, newfd: 1) bash-3815 [002] .... 333.239088: sys_dup2 -> 0x1 bash-3815 [002] .... 333.239092: sys_fcntl(fd: a, cmd: 1, arg: 0) bash-3815 [002] .... 333.239093: sys_fcntl -> 0x1 bash-3815 [002] .... 333.239094: sys_close(fd: a) bash-3815 [002] .... 333.239094: sys_close -> 0x0 Signed-off-by: Romeo Cane <romeo.cane.ext@coriant.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-23sparc: simplify syscall_get_arch()Eric Paris
Include linux/thread_info.h so we can use is_32_bit_task() cleanly. Then just simplify syscall_get_arch() since is_32_bit_task() works for all configuration options. Suggested-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Eric Paris <eparis@redhat.com>
2014-09-23ARCH: AUDIT: implement syscall_get_arch for all archesEric Paris
For all arches which support audit implement syscall_get_arch() They are all pretty easy and straight forward, stolen from how the call to audit_syscall_entry() determines the arch. Based-on-patch-by: Richard Briggs <rgb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com> Cc: linux-ia64@vger.kernel.org Cc: microblaze-uclinux@itee.uq.edu.au Cc: linux-mips@linux-mips.org Cc: linux@lists.openrisc.net Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: sparclinux@vger.kernel.org
2011-05-26powerpc/ftrace: Implement raw syscall tracepoints on PowerPCIan Munsie
This patch implements the raw syscall tracepoints on PowerPC and exports them for ftrace syscalls to use. To minimise reworking existing code, I slightly re-ordered the thread info flags such that the new TIF_SYSCALL_TRACEPOINT bit would still fit within the 16 bits of the andi. instruction's UI field. The instructions in question are in /arch/powerpc/kernel/entry_{32,64}.S to and the _TIF_SYSCALL_T_OR_A with the thread flags to see if system call tracing is enabled. In the case of 64bit PowerPC, arch_syscall_addr and arch_syscall_match_sym_name are overridden to allow ftrace syscalls to work given the unusual system call table structure and symbol names that start with a period. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-03-19powerpc: Use correct ccr bit for syscall error statusNathan Lynch
The powerpc implementations of syscall_get_error and syscall_set_return_value should use CCR0:S0 (0x10000000) for testing and setting syscall error status. Fortunately these APIs don't seem to be used at the moment. Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-08-04powerpc: Move include files to arch/powerpc/include/asmStephen Rothwell
from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where <asm-powepc/...> was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>