1 files changed, 0 insertions, 71 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0096-x86-bpf_jit-small-optimization-in-emit_bpf_tail_call.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0096-x86-bpf_jit-small-optimization-in-emit_bpf_tail_call.patch
deleted file mode 100644
index 28963f0c..00000000
--- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0096-x86-bpf_jit-small-optimization-in-emit_bpf_tail_call.patch
+++ /dev/null
@@ -1,71 +0,0 @@
-From 7beac55cc4c612a3e74debd1d82a01f375b5a187 Mon Sep 17 00:00:00 2001
-From: Eric Dumazet <edumazet@google.com>
-Date: Mon, 29 Jan 2018 02:48:54 +0100
-Subject: [PATCH 096/103] x86: bpf_jit: small optimization in
- emit_bpf_tail_call()
-
-[ upstream commit 84ccac6e7854ebbfb56d2fc6d5bef9be49bb304c ]
-
-Saves 4 bytes replacing following instructions :
-
-lea rax, [rsi + rdx * 8 + offsetof(...)]
-mov rax, qword ptr [rax]
-cmp rax, 0
-
-by :
-
-mov rax, [rsi + rdx * 8 + offsetof(...)]
-test rax, rax
-
-Signed-off-by: Eric Dumazet <edumazet@google.com>
-Cc: Alexei Starovoitov <ast@kernel.org>
-Cc: Daniel Borkmann <daniel@iogearbox.net>
-Acked-by: Daniel Borkmann <daniel@iogearbox.net>
-Acked-by: Alexei Starovoitov <ast@kernel.org>
-Signed-off-by: David S. Miller <davem@davemloft.net>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- arch/x86/net/bpf_jit_comp.c | 9 ++++-----
- 1 file changed, 4 insertions(+), 5 deletions(-)
-
-diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
-index 15f7436..ece29e2 100644
---- a/arch/x86/net/bpf_jit_comp.c
-+++ b/arch/x86/net/bpf_jit_comp.c
-@@ -281,7 +281,7 @@ static void emit_bpf_tail_call(u8 **pprog)
- 	EMIT4(0x48, 0x8B, 0x46,                   /* mov rax, qword ptr [rsi + 16] */
- 	      offsetof(struct bpf_array, map.max_entries));
- 	EMIT3(0x48, 0x39, 0xD0);                  /* cmp rax, rdx */
--#define OFFSET1 47 /* number of bytes to jump */
-+#define OFFSET1 43 /* number of bytes to jump */
- 	EMIT2(X86_JBE, OFFSET1);                  /* jbe out */
- 	label1 = cnt;
- 
-@@ -290,21 +290,20 @@ static void emit_bpf_tail_call(u8 **pprog)
- 	 */
- 	EMIT2_off32(0x8B, 0x85, -STACKSIZE + 36); /* mov eax, dword ptr [rbp - 516] */
- 	EMIT3(0x83, 0xF8, MAX_TAIL_CALL_CNT);     /* cmp eax, MAX_TAIL_CALL_CNT */
--#define OFFSET2 36
-+#define OFFSET2 32
- 	EMIT2(X86_JA, OFFSET2);                   /* ja out */
- 	label2 = cnt;
- 	EMIT3(0x83, 0xC0, 0x01);                  /* add eax, 1 */
- 	EMIT2_off32(0x89, 0x85, -STACKSIZE + 36); /* mov dword ptr [rbp - 516], eax */
- 
- 	/* prog = array->ptrs[index]; */
--	EMIT4_off32(0x48, 0x8D, 0x84, 0xD6,       /* lea rax, [rsi + rdx * 8 + offsetof(...)] */
-+	EMIT4_off32(0x48, 0x8B, 0x84, 0xD6,       /* mov rax, [rsi + rdx * 8 + offsetof(...)] */
- 		    offsetof(struct bpf_array, ptrs));
--	EMIT3(0x48, 0x8B, 0x00);                  /* mov rax, qword ptr [rax] */
- 
- 	/* if (prog == NULL)
- 	 *   goto out;
- 	 */
--	EMIT4(0x48, 0x83, 0xF8, 0x00);            /* cmp rax, 0 */
-+	EMIT3(0x48, 0x85, 0xC0);		  /* test rax,rax */
- #define OFFSET3 10
- 	EMIT2(X86_JE, OFFSET3);                   /* je out */
- 	label3 = cnt;
--- 
-2.7.4
-