linux-kernel - [PATCH bpf v2] riscv, bpf: fix patch

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Message-Id: <20230227072016.14618-1-rdunlap@infradead.org>
Date:   Sun, 26 Feb 2023 23:20:16 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Pu Lehui <pulehui@...wei.com>,
        Luke Nelson <luke.r.nels@...il.com>,
        Xi Wang <xi.wang@...il.com>, bpf@...r.kernel.org,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        John Fastabend <john.fastabend@...il.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Björn Töpel <bjorn@...nel.org>,
        linux-riscv@...ts.infradead.org
Subject: [PATCH bpf v2] riscv, bpf: fix patch_text implicit declaration

bpf_jit_comp64.c uses patch_text(), so add <asm/patch.h> to it
to prevent the build error:

../arch/riscv/net/bpf_jit_comp64.c: In function 'bpf_arch_text_poke':
../arch/riscv/net/bpf_jit_comp64.c:691:23: error: implicit declaration of function 'patch_text'; did you mean 'path_get'? [-Werror=implicit-function-declaration]
  691 |                 ret = patch_text(ip, new_insns, ninsns);
      |                       ^~~~~~~~~~

Fixes: 596f2e6f9cf4 ("riscv, bpf: Add bpf_arch_text_poke support for RV64")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Link: https://lore.kernel.org/r/202302271000.Aj4nMXbZ-lkp@intel.com
Cc: Pu Lehui <pulehui@...wei.com>
Cc: Luke Nelson <luke.r.nels@...il.com>
Cc: Xi Wang <xi.wang@...il.com>
Cc: bpf@...r.kernel.org
Cc: Alexei Starovoitov <ast@...nel.org>
Cc: Daniel Borkmann <daniel@...earbox.net>
Cc: John Fastabend <john.fastabend@...il.com>
Cc: Andrii Nakryiko <andrii@...nel.org>
Cc: Paul Walmsley <paul.walmsley@...ive.com>
Cc: Palmer Dabbelt <palmer@...belt.com>
Cc: Albert Ou <aou@...s.berkeley.edu>
Cc: "Björn Töpel" <bjorn@...nel.org>
Cc: linux-riscv@...ts.infradead.org
---
v2: add header file directly to bpf_jit_comp64.c (Pu Lehui)
    change patch target to bpf (for fixes)

 arch/riscv/net/bpf_jit_comp64.c |    1 +
 1 file changed, 1 insertion(+)

diff -- a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c
--- a/arch/riscv/net/bpf_jit_comp64.c
+++ b/arch/riscv/net/bpf_jit_comp64.c
@@ -10,6 +10,7 @@
 #include <linux/filter.h>
 #include <linux/memory.h>
 #include <linux/stop_machine.h>
+#include <asm/patch.h>
 #include "bpf_jit.h"
 
 #define RV_REG_TCC RV_REG_A6