From: kernel test robot <lkp@intel.com>
To: Claudio Imbrenda <imbrenda@linux.ibm.com>, kvm@vger.kernel.org
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
borntraeger@de.ibm.com, frankja@linux.ibm.com, thuth@redhat.com,
pasic@linux.ibm.com, david@redhat.com,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
scgl@linux.ibm.com
Subject: Re: [PATCH v7 10/17] KVM: s390: pv: add mmu_notifier
Date: Sat, 5 Feb 2022 05:22:44 +0800 [thread overview]
Message-ID: <202202050525.5A9HirW8-lkp@intel.com> (raw)
In-Reply-To: <20220204155349.63238-11-imbrenda@linux.ibm.com>
Hi Claudio,
I love your patch! Yet something to improve:
[auto build test ERROR on kvm/queue]
[also build test ERROR on v5.17-rc2 next-20220204]
[cannot apply to kvms390/next s390/features]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Claudio-Imbrenda/KVM-s390-pv-implement-lazy-destroy-for-reboot/20220204-235609
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
config: s390-randconfig-r044-20220131 (https://download.01.org/0day-ci/archive/20220205/202202050525.5A9HirW8-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a73e4ce6a59b01f0e37037761c1e6889d539d233)
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
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/0day-ci/linux/commit/9ee65f25ad996d38f6935360c99a89e72024174b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Claudio-Imbrenda/KVM-s390-pv-implement-lazy-destroy-for-reboot/20220204-235609
git checkout 9ee65f25ad996d38f6935360c99a89e72024174b
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash arch/s390/kvm/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from arch/s390/kvm/pv.c:9:
In file included from include/linux/kvm_host.h:41:
In file included from include/linux/kvm_para.h:5:
In file included from include/uapi/linux/kvm_para.h:37:
In file included from arch/s390/include/asm/kvm_para.h:25:
In file included from arch/s390/include/asm/diag.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:31:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from arch/s390/kvm/pv.c:9:
In file included from include/linux/kvm_host.h:41:
In file included from include/linux/kvm_para.h:5:
In file included from include/uapi/linux/kvm_para.h:37:
In file included from arch/s390/include/asm/kvm_para.h:25:
In file included from arch/s390/include/asm/diag.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:31:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from arch/s390/kvm/pv.c:9:
In file included from include/linux/kvm_host.h:41:
In file included from include/linux/kvm_para.h:5:
In file included from include/uapi/linux/kvm_para.h:37:
In file included from arch/s390/include/asm/kvm_para.h:25:
In file included from arch/s390/include/asm/diag.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:31:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> arch/s390/kvm/pv.c:255:3: error: implicit declaration of function 'mmu_notifier_register' [-Werror,-Wimplicit-function-declaration]
mmu_notifier_register(&kvm->arch.pv.mmu_notifier, kvm->mm);
^
arch/s390/kvm/pv.c:255:3: note: did you mean 'mmu_notifier_release'?
include/linux/mmu_notifier.h:679:20: note: 'mmu_notifier_release' declared here
static inline void mmu_notifier_release(struct mm_struct *mm)
^
12 warnings and 1 error generated.
vim +/mmu_notifier_register +255 arch/s390/kvm/pv.c
210
211 int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc)
212 {
213 struct uv_cb_cgc uvcb = {
214 .header.cmd = UVC_CMD_CREATE_SEC_CONF,
215 .header.len = sizeof(uvcb)
216 };
217 int cc, ret;
218 u16 dummy;
219
220 ret = kvm_s390_pv_alloc_vm(kvm);
221 if (ret)
222 return ret;
223
224 /* Inputs */
225 uvcb.guest_stor_origin = 0; /* MSO is 0 for KVM */
226 uvcb.guest_stor_len = kvm->arch.pv.guest_len;
227 uvcb.guest_asce = kvm->arch.gmap->asce;
228 uvcb.guest_sca = (unsigned long)kvm->arch.sca;
229 uvcb.conf_base_stor_origin = (u64)kvm->arch.pv.stor_base;
230 uvcb.conf_virt_stor_origin = (u64)kvm->arch.pv.stor_var;
231
232 cc = uv_call_sched(0, (u64)&uvcb);
233 *rc = uvcb.header.rc;
234 *rrc = uvcb.header.rrc;
235 KVM_UV_EVENT(kvm, 3, "PROTVIRT CREATE VM: handle %llx len %llx rc %x rrc %x",
236 uvcb.guest_handle, uvcb.guest_stor_len, *rc, *rrc);
237
238 /* Outputs */
239 kvm->arch.pv.handle = uvcb.guest_handle;
240
241 atomic_inc(&kvm->mm->context.protected_count);
242 if (cc) {
243 if (uvcb.header.rc & UVC_RC_NEED_DESTROY) {
244 kvm_s390_pv_deinit_vm(kvm, &dummy, &dummy);
245 } else {
246 atomic_dec(&kvm->mm->context.protected_count);
247 kvm_s390_pv_dealloc_vm(kvm);
248 }
249 return -EIO;
250 }
251 kvm->arch.gmap->guest_handle = uvcb.guest_handle;
252 /* Add the notifier only once. No races because we hold kvm->lock */
253 if (kvm->arch.pv.mmu_notifier.ops != &kvm_s390_pv_mmu_notifier_ops) {
254 kvm->arch.pv.mmu_notifier.ops = &kvm_s390_pv_mmu_notifier_ops;
> 255 mmu_notifier_register(&kvm->arch.pv.mmu_notifier, kvm->mm);
256 }
257 return 0;
258 }
259
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
next prev parent reply other threads:[~2022-02-04 21:22 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 15:53 [PATCH v7 00/17] KVM: s390: pv: implement lazy destroy for reboot Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 01/17] KVM: s390: pv: leak the topmost page table when destroy fails Claudio Imbrenda
2022-02-07 8:56 ` Janosch Frank
2022-02-07 9:02 ` Claudio Imbrenda
2022-02-07 14:33 ` Heiko Carstens
2022-02-07 14:49 ` Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 02/17] KVM: s390: pv: handle secure storage violations for protected guests Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 03/17] KVM: s390: pv: handle secure storage exceptions for normal guests Claudio Imbrenda
2022-02-04 19:51 ` kernel test robot
2022-02-07 9:40 ` Janosch Frank
2022-02-04 15:53 ` [PATCH v7 04/17] KVM: s390: pv: refactor s390_reset_acc Claudio Imbrenda
2022-02-07 10:02 ` Janosch Frank
2022-02-07 10:47 ` Claudio Imbrenda
2022-02-07 10:56 ` Janosch Frank
2022-02-07 11:01 ` Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 05/17] KVM: s390: pv: usage counter instead of flag Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 06/17] KVM: s390: pv: add export before import Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 07/17] KVM: s390: pv: module parameter to fence lazy destroy Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 08/17] KVM: s390: pv: make kvm_s390_cpus_from_pv global Claudio Imbrenda
2022-02-07 10:15 ` Janosch Frank
2022-02-04 15:53 ` [PATCH v7 09/17] KVM: s390: pv: clear the state without memset Claudio Imbrenda
2022-02-07 10:09 ` Janosch Frank
2022-02-04 15:53 ` [PATCH v7 10/17] KVM: s390: pv: add mmu_notifier Claudio Imbrenda
2022-02-04 21:22 ` kernel test robot [this message]
2022-02-04 21:22 ` kernel test robot
2022-02-07 11:04 ` Janosch Frank
2022-02-07 12:16 ` Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 11/17] s390/mm: KVM: pv: when tearing down, try to destroy protected pages Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 12/17] KVM: s390: pv: refactoring of kvm_s390_pv_deinit_vm Claudio Imbrenda
2022-02-07 11:06 ` Janosch Frank
2022-02-04 15:53 ` [PATCH v7 13/17] KVM: s390: pv: cleanup leftover protected VMs if needed Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 14/17] KVM: s390: pv: asynchronous destroy for reboot Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 15/17] KVM: s390: pv: api documentation for asynchronous destroy Claudio Imbrenda
2022-02-07 14:52 ` Janosch Frank
2022-02-07 15:17 ` Claudio Imbrenda
2022-02-04 15:53 ` [PATCH v7 16/17] KVM: s390: pv: add KVM_CAP_S390_PROT_REBOOT_ASYNC Claudio Imbrenda
2022-02-07 14:37 ` Janosch Frank
2022-02-07 15:19 ` Claudio Imbrenda
2022-02-07 15:40 ` Janosch Frank
2022-02-04 15:53 ` [PATCH v7 17/17] KVM: s390: pv: avoid export before import if possible Claudio Imbrenda
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