/* * jitdump.h: jitted code info encapsulation file format * * Adapted from OProfile GPLv2 support jidump.h: * Copyright 2007 OProfile authors * Jens Wilke * Daniel Hansel * Copyright IBM Corporation 2007 */ #ifndef JITDUMP_H #define JITDUMP_H #include #include #include /* JiTD */ #define JITHEADER_MAGIC 0x4A695444 #define JITHEADER_MAGIC_SW 0x4454694A #define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7) #define ALIGN_8(x) (((x) + 7) & (~7)) #define JITHEADER_VERSION 1 enum jitdump_flags_bits { JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT, JITDUMP_FLAGS_MAX_BIT, }; #define JITDUMP_FLAGS_ARCH_TIMESTAMP (1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT) #define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \ (~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0) struct jitheader { uint32_t magic; /* characters "jItD" */ uint32_t version; /* header version */ uint32_t total_size; /* total size of header */ uint32_t elf_mach; /* elf mach target */ uint32_t pad1; /* reserved */ uint32_t pid; /* JIT process id */ uint64_t timestamp; /* timestamp */ uint64_t flags; /* flags */ }; enum jit_record_type { JIT_CODE_LOAD = 0, JIT_CODE_MOVE = 1, JIT_CODE_DEBUG_INFO = 2, JIT_CODE_CLOSE = 3, JIT_CODE_UNWINDING_INFO = 4, JIT_CODE_MAX, }; /* record prefix (mandatory in each record) */ struct jr_prefix { uint32_t id; uint32_t total_size; uint64_t timestamp; }; struct jr_code_load { struct jr_prefix p; uint32_t pid; uint32_t tid; uint64_t vma; uint64_t code_addr; uint64_t code_size; uint64_t code_index; }; struct jr_code_close { struct jr_prefix p; }; struct jr_code_move { struct jr_prefix p; uint32_t pid; uint32_t tid; uint64_t vma; uint64_t old_code_addr; uint64_t new_code_addr; uint64_t code_size; uint64_t code_index; }; struct debug_entry { uint64_t addr; int lineno; /* source line number starting at 1 */ int discrim; /* column discriminator, 0 is default */ const char name[0]; /* null terminated filename, \xff\0 if same as previous entry */ }; struct jr_code_debug_info { struct jr_prefix p; uint64_t code_addr; uint64_t nr_entry; struct debug_entry entries[0]; }; struct jr_code_unwinding_info { struct jr_prefix p; uint64_t unwinding_size; uint64_t eh_frame_hdr_size; uint64_t mapped_size; const char unwinding_data[0]; }; union jr_entry { struct jr_code_debug_info info; struct jr_code_close close; struct jr_code_load load; struct jr_code_move move; struct jr_prefix prefix; struct jr_code_unwinding_info unwinding; }; static inline struct debug_entry * debug_entry_next(struct debug_entry *ent) { void *a = ent + 1; size_t l = strlen(ent->name) + 1; return a + l; } static inline char * debug_entry_file(struct debug_entry *ent) { void *a = ent + 1; return a; } #endif /* !JITDUMP_H */ d=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>bluetooth
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /net/bluetooth
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'net/bluetooth')