Merge tag 'v3.7-rc1' into staging/for_v3.8

Linux 3.7-rc1

* tag 'v3.7-rc1': (9579 commits)
  Linux 3.7-rc1
  x86, boot: Explicitly include autoconf.h for hostprogs
  perf: Fix UAPI fallout
  ARM: config: make sure that platforms are ordered by option string
  ARM: config: sort select statements alphanumerically
  UAPI: (Scripted) Disintegrate include/linux/byteorder
  UAPI: (Scripted) Disintegrate include/linux
  UAPI: Unexport linux/blk_types.h
  UAPI: Unexport part of linux/ppp-comp.h
  perf: Handle new rbtree implementation
  procfs: don't need a PATH_MAX allocation to hold a string representation of an int
  vfs: embed struct filename inside of names_cache allocation if possible
  audit: make audit_inode take struct filename
  vfs: make path_openat take a struct filename pointer
  vfs: turn do_path_lookup into wrapper around struct filename variant
  audit: allow audit code to satisfy getname requests from its names_list
  vfs: define struct filename and have getname() return it
  btrfs: Fix compilation with user namespace support enabled
  userns: Fix posix_acl_file_xattr_userns gid conversion
  userns: Properly print bluetooth socket uids
  ...

1 files changed, 34 insertions, 0 deletions

diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 33643a8bcbb..520d2bd0b9c 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -280,6 +280,31 @@ void bpf_jit_compile(struct sk_filter *fp)
 				}
 				EMIT4(0x31, 0xd2, 0xf7, 0xf3); /* xor %edx,%edx; div %ebx */
 				break;
+			case BPF_S_ALU_MOD_X: /* A %= X; */
+				seen |= SEEN_XREG;
+				EMIT2(0x85, 0xdb);	/* test %ebx,%ebx */
+				if (pc_ret0 > 0) {
+					/* addrs[pc_ret0 - 1] is start address of target
+					 * (addrs[i] - 6) is the address following this jmp
+					 * ("xor %edx,%edx; div %ebx;mov %edx,%eax" being 6 bytes long)
+					 */
+					EMIT_COND_JMP(X86_JE, addrs[pc_ret0 - 1] -
+								(addrs[i] - 6));
+				} else {
+					EMIT_COND_JMP(X86_JNE, 2 + 5);
+					CLEAR_A();
+					EMIT1_off32(0xe9, cleanup_addr - (addrs[i] - 6)); /* jmp .+off32 */
+				}
+				EMIT2(0x31, 0xd2);	/* xor %edx,%edx */
+				EMIT2(0xf7, 0xf3);	/* div %ebx */
+				EMIT2(0x89, 0xd0);	/* mov %edx,%eax */
+				break;
+			case BPF_S_ALU_MOD_K: /* A %= K; */
+				EMIT2(0x31, 0xd2);	/* xor %edx,%edx */
+				EMIT1(0xb9);EMIT(K, 4);	/* mov imm32,%ecx */
+				EMIT2(0xf7, 0xf1);	/* div %ecx */
+				EMIT2(0x89, 0xd0);	/* mov %edx,%eax */
+				break;
 			case BPF_S_ALU_DIV_K: /* A = reciprocal_divide(A, K); */
 				EMIT3(0x48, 0x69, 0xc0); /* imul imm32,%rax,%rax */
 				EMIT(K, 4);
@@ -310,9 +335,18 @@ void bpf_jit_compile(struct sk_filter *fp)
 					EMIT1_off32(0x0d, K);	/* or imm32,%eax */
 				break;
 			case BPF_S_ANC_ALU_XOR_X: /* A ^= X; */
+			case BPF_S_ALU_XOR_X:
 				seen |= SEEN_XREG;
 				EMIT2(0x31, 0xd8);		/* xor %ebx,%eax */
 				break;
+			case BPF_S_ALU_XOR_K: /* A ^= K; */
+				if (K == 0)
+					break;
+				if (is_imm8(K))
+					EMIT3(0x83, 0xf0, K);	/* xor imm8,%eax */
+				else
+					EMIT1_off32(0x35, K);	/* xor imm32,%eax */
+				break;
 			case BPF_S_ALU_LSH_X: /* A <<= X; */
 				seen |= SEEN_XREG;
 				EMIT4(0x89, 0xd9, 0xd3, 0xe0);	/* mov %ebx,%ecx; shl %cl,%eax */