linux-kernel - [PATCH v1 12/12] powerpc: Replace PPC_INST_NOP by PPC_RAW

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <ad46c195ca1b8572629ef07ba6bfe247585239a6.1621506159.git.christophe.leroy@csgroup.eu>
Date:   Thu, 20 May 2021 10:23:11 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        naveen.n.rao@...ux.vnet.ibm.com, jniethe5@...il.com
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 12/12] powerpc: Replace PPC_INST_NOP by PPC_RAW_NOP()

On the road to removing all PPC_INST_xx defines in
asm/ppc-opcodes.h, change PPC_INST_NOP to PPC_RAW_NOP().

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/include/asm/ppc-opcode.h | 3 +--
 arch/powerpc/kernel/crash_dump.c      | 2 +-
 arch/powerpc/kernel/jump_label.c      | 2 +-
 arch/powerpc/kernel/setup_32.c        | 2 +-
 arch/powerpc/lib/test_emulate_step.c  | 2 +-
 5 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 2e428ed7511a..f32fb4852b94 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -261,7 +261,6 @@
 #define PPC_INST_MFSPR_PVR		0x7c1f42a6
 #define PPC_INST_MFSPR_PVR_MASK		0xfc1ffffe
 #define PPC_INST_MTMSRD			0x7c000164
-#define PPC_INST_NOP			0x60000000
 #define PPC_INST_POPCNTB		0x7c0000f4
 #define PPC_INST_POPCNTB_MASK		0xfc0007fe
 #define PPC_INST_RFEBB			0x4c000124
@@ -475,7 +474,7 @@
 #define PPC_RAW_ADD_DOT(t, a, b)	(PPC_INST_ADD | ___PPC_RT(t) | ___PPC_RA(a) | ___PPC_RB(b) | 0x1)
 #define PPC_RAW_ADDC(t, a, b)		(0x7c000014 | ___PPC_RT(t) | ___PPC_RA(a) | ___PPC_RB(b))
 #define PPC_RAW_ADDC_DOT(t, a, b)	(0x7c000014 | ___PPC_RT(t) | ___PPC_RA(a) | ___PPC_RB(b) | 0x1)
-#define PPC_RAW_NOP()			(PPC_INST_NOP)
+#define PPC_RAW_NOP()			PPC_RAW_ORI(0, 0, 0)
 #define PPC_RAW_BLR()			(0x4e800020)
 #define PPC_RAW_BLRL()			(0x4e800021)
 #define PPC_RAW_MTLR(r)			(0x7c0803a6 | ___PPC_RT(r))
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 735e89337398..adb39da684be 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -45,7 +45,7 @@ static void __init create_trampoline(unsigned long addr)
 	 * branch to "addr" we jump to ("addr" + 32 MB). Although it requires
 	 * two instructions it doesn't require any registers.
 	 */
-	patch_instruction(p, ppc_inst(PPC_INST_NOP));
+	patch_instruction(p, ppc_inst(PPC_RAW_NOP()));
 	patch_branch((void *)p + 4, addr + PHYSICAL_START, 0);
 }
 
diff --git a/arch/powerpc/kernel/jump_label.c b/arch/powerpc/kernel/jump_label.c
index ce87dc5ea23c..90c97246384c 100644
--- a/arch/powerpc/kernel/jump_label.c
+++ b/arch/powerpc/kernel/jump_label.c
@@ -16,5 +16,5 @@ void arch_jump_label_transform(struct jump_entry *entry,
 	if (type == JUMP_LABEL_JMP)
 		patch_branch(addr, jump_entry_target(entry), 0);
 	else
-		patch_instruction(addr, ppc_inst(PPC_INST_NOP));
+		patch_instruction(addr, ppc_inst(PPC_RAW_NOP()));
 }
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index d7c1f92152af..a369fb27ccaa 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -85,7 +85,7 @@ notrace void __init machine_init(u64 dt_ptr)
 	/* Enable early debugging if any specified (see udbg.h) */
 	udbg_early_init();
 
-	patch_instruction_site(&patch__memcpy_nocache, ppc_inst(PPC_INST_NOP));
+	patch_instruction_site(&patch__memcpy_nocache, ppc_inst(PPC_RAW_NOP()));
 
 	create_cond_branch(&insn, addr, branch_target(addr), 0x820000);
 	patch_instruction(addr, insn);	/* replace b by bne cr0 */
diff --git a/arch/powerpc/lib/test_emulate_step.c b/arch/powerpc/lib/test_emulate_step.c
index f7c74f4f684b..f0ebb5349f58 100644
--- a/arch/powerpc/lib/test_emulate_step.c
+++ b/arch/powerpc/lib/test_emulate_step.c
@@ -920,7 +920,7 @@ static struct compute_test compute_tests[] = {
 		.subtests = {
 			{
 				.descr = "R0 = LONG_MAX",
-				.instr = ppc_inst(PPC_INST_NOP),
+				.instr = ppc_inst(PPC_RAW_NOP()),
 				.regs = {
 					.gpr[0] = LONG_MAX,
 				}
-- 
2.25.0