arch/arm/kernel/entry-common.S:166: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
From: kernel test robot
Date: Wed Mar 09 2022 - 12:10:20 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 330f4c53d3c2d8b11d86ec03a964b86dc81452f5
commit: b9baf5c8c5c356757f4f9d8180b5e9d234065bc3 ARM: Spectre-BHB workaround
date: 4 days ago
config: arm-allmodconfig (https://download.01.org/0day-ci/archive/20220310/202203100022.bfK7WDH2-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b9baf5c8c5c356757f4f9d8180b5e9d234065bc3
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout b9baf5c8c5c356757f4f9d8180b5e9d234065bc3
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
arch/arm/kernel/entry-common.S: Assembler messages:
>> arch/arm/kernel/entry-common.S:166: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/kernel/entry-common.S:175: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/kernel/entry-armv.S: Assembler messages:
>> arch/arm/kernel/entry-armv.S:1090: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/kernel/entry-armv.S:1113: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/kernel/entry-armv.S:1136: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/kernel/entry-armv.S:1159: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/kernel/entry-armv.S:1198: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/kernel/hyp-stub.S: Assembler messages:
>> arch/arm/kernel/hyp-stub.S:173: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/mm/cache-v7.S: Assembler messages:
>> arch/arm/mm/cache-v7.S:42: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mm/cache-v7.S:69: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mm/cache-v7.S:142: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mm/cache-v7.S:179: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mm/cache-v7.S:312: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/mm/tlb-v7.S: Assembler messages:
>> arch/arm/mm/tlb-v7.S:85: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/mm/proc-v7-2level.S: Assembler messages:
>> arch/arm/mm/proc-v7-2level.S:55: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mm/proc-v7-2level.S:57: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
>> arch/arm/mm/proc-v7.S:59: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mm/proc-v7.S:183: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/common/secure_cntvoff.S: Assembler messages:
>> arch/arm/common/secure_cntvoff.S:24: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/common/secure_cntvoff.S:27: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/common/secure_cntvoff.S:29: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/mach-imx/suspend-imx6.S: Assembler messages:
>> arch/arm/mach-imx/suspend-imx6.S:315: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/mach-omap2/sleep34xx.S: Assembler messages:
>> arch/arm/mach-omap2/sleep34xx.S:174: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mach-omap2/sleep34xx.S:308: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/mach-omap2/sleep33xx.S: Assembler messages:
>> arch/arm/mach-omap2/sleep33xx.S:58: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mach-omap2/sleep33xx.S:125: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mach-omap2/sleep33xx.S:192: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
--
arch/arm/mach-omap2/sleep43xx.S: Assembler messages:
>> arch/arm/mach-omap2/sleep43xx.S:98: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
arch/arm/mach-omap2/sleep43xx.S:320: Error: co-processor register expected -- `mcr p15,0,r0,c7,r5,4'
..
vim +166 arch/arm/kernel/entry-common.S
150
151 /*=============================================================================
152 * SWI handler
153 *-----------------------------------------------------------------------------
154 */
155
156 .align 5
157 #ifdef CONFIG_HARDEN_BRANCH_HISTORY
158 ENTRY(vector_bhb_loop8_swi)
159 sub sp, sp, #PT_REGS_SIZE
160 stmia sp, {r0 - r12}
161 mov r8, #8
162 1: b 2f
163 2: subs r8, r8, #1
164 bne 1b
165 dsb
> 166 isb
167 b 3f
168 ENDPROC(vector_bhb_loop8_swi)
169
170 .align 5
171 ENTRY(vector_bhb_bpiall_swi)
172 sub sp, sp, #PT_REGS_SIZE
173 stmia sp, {r0 - r12}
174 mcr p15, 0, r8, c7, c5, 6 @ BPIALL
175 isb
176 b 3f
177 ENDPROC(vector_bhb_bpiall_swi)
178 #endif
179 .align 5
180 ENTRY(vector_swi)
181 #ifdef CONFIG_CPU_V7M
182 v7m_exception_entry
183 #else
184 sub sp, sp, #PT_REGS_SIZE
185 stmia sp, {r0 - r12} @ Calling r0 - r12
186 3:
187 ARM( add r8, sp, #S_PC )
188 ARM( stmdb r8, {sp, lr}^ ) @ Calling sp, lr
189 THUMB( mov r8, sp )
190 THUMB( store_user_sp_lr r8, r10, S_SP ) @ calling sp, lr
191 mrs saved_psr, spsr @ called from non-FIQ mode, so ok.
192 TRACE( mov saved_pc, lr )
193 str saved_pc, [sp, #S_PC] @ Save calling PC
194 str saved_psr, [sp, #S_PSR] @ Save CPSR
195 str r0, [sp, #S_OLD_R0] @ Save OLD_R0
196 #endif
197 reload_current r10, ip
198 zero_fp
199 alignment_trap r10, ip, __cr_alignment
200 asm_trace_hardirqs_on save=0
201 enable_irq_notrace
202 ct_user_exit save=0
203
204 /*
205 * Get the system call number.
206 */
207
---
0-DAY CI Kernel Test Service, Intel Corporation
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