#undef TRACE_SYSTEM #define TRACE_SYSTEM raw_syscalls #define TRACE_INCLUDE_FILE syscalls #if !defined(_TRACE_EVENTS_SYSCALLS_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_EVENTS_SYSCALLS_H #include #include #include #ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS TRACE_EVENT_FN(sys_enter, TP_PROTO(struct pt_regs *regs, long id), TP_ARGS(regs, id), TP_STRUCT__entry( __field( long, id ) __array( unsigned long, args, 6 ) ), TP_fast_assign( __entry->id = id; syscall_get_arguments(current, regs, 0, 6, __entry->args); ), TP_printk("NR %ld (%lx, %lx, %lx, %lx, %lx, %lx)", __entry->id, __entry->args[0], __entry->args[1], __entry->args[2], __entry->args[3], __entry->args[4], __entry->args[5]), syscall_regfunc, syscall_unregfunc ); TRACE_EVENT_FLAGS(sys_enter, TRACE_EVENT_FL_CAP_ANY) TRACE_EVENT_FN(sys_exit, TP_PROTO(struct pt_regs *regs, long ret), TP_ARGS(regs, ret), TP_STRUCT__entry( __field( long, id ) __field( long, ret ) ), TP_fast_assign( __entry->id = syscall_get_nr(current, regs); __entry->ret = ret; ), TP_printk("NR %ld = %ld", __entry->id, __entry->ret), syscall_regfunc, syscall_unregfunc ); TRACE_EVENT_FLAGS(sys_exit, TRACE_EVENT_FL_CAP_ANY) #endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */ #endif /* _TRACE_EVENTS_SYSCALLS_H */ /* This part must be outside protection */ #include ='tabs'> summaryrefslogtreecommitdiff
path: root/net/ipv6/tcpv6_offload.c
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Diffstat (limited to 'net/ipv6/tcpv6_offload.c')
5:02 +0000
committerIngo Molnar <mingo@kernel.org>2017-02-01 21:17:49 +0100
commitc8f325a59cfc718d13a50fbc746ed9b415c25e92 (patch)
treed53fbdac9d0781e39a13b2ac6b2bd258cf3b4140 /net/ceph/string_table.c
parentbf29bddf0417a4783da3b24e8c9e017ac649326f (diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/ceph/string_table.c')