From: kbuild test robot <lkp@intel.com>
To: Leonardo Bras <leonardo@linux.ibm.com>
Cc: linux-mm@kvack.org, Paul Mackerras <paulus@samba.org>,
Mike Rapoport <rppt@linux.ibm.com>,
linux-arch@vger.kernel.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
Steven Price <steven.price@arm.com>,
Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>,
Leonardo Bras <leonardo@linux.ibm.com>,
Michal Suchanek <msuchanek@suse.de>,
Arnd Bergmann <arnd@arndb.de>,
Robin Murphy <robin.murphy@arm.com>,
Nicholas Piggin <npiggin@gmail.com>,
kvm-ppc@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Reza Arbab <arbab@linux.ibm.com>,
Allison Randal <allison@lohutok.net>,
kbuild-all@lists.01.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v6 01/11] asm-generic/pgtable: Adds generic functions to track lockless pgtable walks
Date: Fri, 7 Feb 2020 13:39:41 +0800 [thread overview]
Message-ID: <202002071321.7I3DHPZA%lkp@intel.com> (raw)
In-Reply-To: <20200206030900.147032-2-leonardo@linux.ibm.com>
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Hi Leonardo,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on asm-generic/master paulus-powerpc/kvm-ppc-next linus/master v5.5 next-20200207]
[cannot apply to kvm-ppc/kvm-ppc-next]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Leonardo-Bras/Introduces-new-functions-for-tracking-lockless-pagetable-walks/20200207-071035
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: xtensa-common_defconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 7.5.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=xtensa
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
include/asm-generic/pgtable.h: Assembler messages:
include/asm-generic/pgtable.h:1230: Error: unknown opcode or format name 'static'
include/asm-generic/pgtable.h:1231: Error: unknown opcode or format name 'unsigned'
include/asm-generic/pgtable.h:1233: Error: unknown opcode or format name 'unsigned'
include/asm-generic/pgtable.h:1240: Error: unknown opcode or format name 'local_irq_save'
include/asm-generic/pgtable.h:1248: Error: unknown opcode or format name 'smp_mb'
include/asm-generic/pgtable.h:1250: Error: unknown opcode or format name 'return'
>> include/asm-generic/pgtable.h:1251: Error: couldn't find a valid instruction format
ops were:
include/asm-generic/pgtable.h:1257: Error: unknown opcode or format name 'static'
include/asm-generic/pgtable.h:1265: Error: unknown opcode or format name 'smp_mb'
include/asm-generic/pgtable.h:1272: Error: unknown opcode or format name 'local_irq_restore'
include/asm-generic/pgtable.h:1273: Error: couldn't find a valid instruction format
ops were:
vim +1251 include/asm-generic/pgtable.h
1224
1225 #ifndef __HAVE_ARCH_LOCKLESS_PGTBL_WALK_CONTROL
1226 /*
1227 * begin_lockless_pgtbl_walk: Must be inserted before a function call that does
1228 * lockless pagetable walks, such as __find_linux_pte()
1229 */
1230 static inline
1231 unsigned long begin_lockless_pgtbl_walk(void)
1232 {
1233 unsigned long irq_mask;
1234
1235 /*
1236 * Interrupts must be disabled during the lockless page table walk.
1237 * That's because the deleting or splitting involves flushing TLBs,
1238 * which in turn issues interrupts, that will block when disabled.
1239 */
1240 local_irq_save(irq_mask);
1241
1242 /*
1243 * This memory barrier pairs with any code that is either trying to
1244 * delete page tables, or split huge pages. Without this barrier,
1245 * the page tables could be read speculatively outside of interrupt
1246 * disabling.
1247 */
1248 smp_mb();
1249
1250 return irq_mask;
> 1251 }
1252
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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next prev parent reply other threads:[~2020-02-07 5:42 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-06 3:08 [PATCH v6 00/11] Introduces new functions for tracking lockless pagetable walks Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 01/11] asm-generic/pgtable: Adds generic functions to track lockless pgtable walks Leonardo Bras
2020-02-06 5:54 ` Christophe Leroy
2020-02-07 2:19 ` Leonardo Bras
2020-02-07 5:39 ` kbuild test robot [this message]
2020-02-06 3:08 ` [PATCH v6 02/11] mm/gup: Use functions to track lockless pgtbl walks on gup_pgd_range Leonardo Bras
2020-02-06 3:25 ` Leonardo Bras
2020-02-07 22:54 ` John Hubbard
2020-02-17 20:55 ` Leonardo Bras
2020-10-15 14:46 ` Michal Suchánek
2020-10-16 3:27 ` Aneesh Kumar K.V
2020-02-07 1:19 ` kbuild test robot
2020-02-07 8:01 ` kbuild test robot
2020-02-06 3:08 ` [PATCH v6 03/11] powerpc/mm: Adds arch-specificic functions to track lockless pgtable walks Leonardo Bras
2020-02-06 5:46 ` Christophe Leroy
2020-02-07 4:38 ` Leonardo Bras
2020-02-17 20:32 ` Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 04/11] powerpc/mce_power: Use functions to track lockless pgtbl walks Leonardo Bras
2020-02-06 5:48 ` Christophe Leroy
2020-02-07 4:00 ` Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 05/11] powerpc/perf: " Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 06/11] powerpc/mm/book3s64/hash: " Leonardo Bras
2020-02-06 6:06 ` Christophe Leroy
2020-02-07 3:49 ` Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 07/11] powerpc/kvm/e500: " Leonardo Bras
2020-02-06 6:18 ` Christophe Leroy
2020-02-07 3:10 ` Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 08/11] powerpc/kvm/book3s_hv: " Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 09/11] powerpc/kvm/book3s_64: " Leonardo Bras
2020-02-06 3:08 ` [PATCH v6 10/11] powerpc/mm: Adds counting method to track lockless pagetable walks Leonardo Bras
2020-02-06 6:23 ` Christophe Leroy
2020-02-07 1:56 ` Leonardo Bras
2020-02-06 3:09 ` [PATCH v6 11/11] powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing Leonardo Bras
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