From: kernel test robot <lkp@intel.com>
To: Yury Norov <yury.norov@gmail.com>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
Linux Memory Management List <linux-mm@kvack.org>
Subject: [linux-next:master 12308/12886] arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type
Date: Fri, 20 May 2022 02:24:34 +0800 [thread overview]
Message-ID: <202205200219.llzx7zfy-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 21498d01d045c5b95b93e0a0625ae965b4330ebe
commit: 81db71a60292e9a40ae8f6ef137b17f2aaa15a52 [12308/12886] KVM: x86: hyper-v: replace bitmap_weight() with hweight64()
config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220520/202205200219.llzx7zfy-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e00cbbec06c08dc616a0d52a20f678b8fbd4e304)
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/next/linux-next.git/commit/?id=81db71a60292e9a40ae8f6ef137b17f2aaa15a52
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 81db71a60292e9a40ae8f6ef137b17f2aaa15a52
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
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/x86/kvm/hyperv.c:21:
In file included from arch/x86/kvm/x86.h:5:
In file included from include/linux/kvm_host.h:7:
In file included from include/linux/hardirq.h:5:
In file included from include/linux/context_tracking_state.h:5:
In file included from include/linux/percpu.h:5:
In file included from include/linux/mmdebug.h:5:
In file included from include/linux/bug.h:5:
In file included from arch/x86/include/asm/bug.h:87:
In file included from include/asm-generic/bug.h:22:
In file included from include/linux/printk.h:8:
In file included from include/linux/linkage.h:7:
In file included from include/linux/export.h:123:
./include/generated/autoksyms.h:456:20: error: ISO C99 requires whitespace after the macro name [-Werror,-Wc99-extensions]
#define __KSYM_arch/x86/kvm/vmx/vmenter.o 1
^
./include/generated/autoksyms.h:1308:23: error: ISO C99 requires whitespace after the macro name [-Werror,-Wc99-extensions]
#define __KSYM_drivers/gpu/drm/display/drm_dp_dual_mode_helper.o 1
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:10:9: note: expanded from macro '__const_hweight8'
((!!((w) & (1ULL << 0))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:11:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 1))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:12:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 2))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:13:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 3))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:14:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 4))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:15:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 5))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:16:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 6))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:17:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 7)))))
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:10:9: note: expanded from macro '__const_hweight8'
((!!((w) & (1ULL << 0))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:11:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 1))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:12:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 2))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:13:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 3))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:14:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 4))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:15:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 5))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:16:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 6))) + \
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:17:9: note: expanded from macro '__const_hweight8'
(!!((w) & (1ULL << 7)))))
^
>> arch/x86/kvm/hyperv.c:1983:22: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
if (hc->var_cnt != hweight64(valid_bank_mask))
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
^~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64'
#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
^ ~~
include/asm-generic/bitops/const_hweight.h:20:73: note: expanded from macro '__const_hweight32'
#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
^
include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from macro '__const_hweight16'
#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
^
include/asm-generic/bitops/const_hweight.h:10:9: note: expanded from macro '__const_hweight8'
((!!((w) & (1ULL << 0))) + \
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
vim +1983 arch/x86/kvm/hyperv.c
1934
1935 static u64 kvm_hv_send_ipi(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc)
1936 {
1937 struct kvm *kvm = vcpu->kvm;
1938 struct hv_send_ipi_ex send_ipi_ex;
1939 struct hv_send_ipi send_ipi;
1940 DECLARE_BITMAP(vcpu_mask, KVM_MAX_VCPUS);
1941 unsigned long valid_bank_mask;
1942 u64 sparse_banks[KVM_HV_MAX_SPARSE_VCPU_SET_BITS];
1943 u32 vector;
1944 bool all_cpus;
1945
1946 if (hc->code == HVCALL_SEND_IPI) {
1947 if (!hc->fast) {
1948 if (unlikely(kvm_read_guest(kvm, hc->ingpa, &send_ipi,
1949 sizeof(send_ipi))))
1950 return HV_STATUS_INVALID_HYPERCALL_INPUT;
1951 sparse_banks[0] = send_ipi.cpu_mask;
1952 vector = send_ipi.vector;
1953 } else {
1954 /* 'reserved' part of hv_send_ipi should be 0 */
1955 if (unlikely(hc->ingpa >> 32 != 0))
1956 return HV_STATUS_INVALID_HYPERCALL_INPUT;
1957 sparse_banks[0] = hc->outgpa;
1958 vector = (u32)hc->ingpa;
1959 }
1960 all_cpus = false;
1961 valid_bank_mask = BIT_ULL(0);
1962
1963 trace_kvm_hv_send_ipi(vector, sparse_banks[0]);
1964 } else {
1965 if (!hc->fast) {
1966 if (unlikely(kvm_read_guest(kvm, hc->ingpa, &send_ipi_ex,
1967 sizeof(send_ipi_ex))))
1968 return HV_STATUS_INVALID_HYPERCALL_INPUT;
1969 } else {
1970 send_ipi_ex.vector = (u32)hc->ingpa;
1971 send_ipi_ex.vp_set.format = hc->outgpa;
1972 send_ipi_ex.vp_set.valid_bank_mask = sse128_lo(hc->xmm[0]);
1973 }
1974
1975 trace_kvm_hv_send_ipi_ex(send_ipi_ex.vector,
1976 send_ipi_ex.vp_set.format,
1977 send_ipi_ex.vp_set.valid_bank_mask);
1978
1979 vector = send_ipi_ex.vector;
1980 valid_bank_mask = send_ipi_ex.vp_set.valid_bank_mask;
1981 all_cpus = send_ipi_ex.vp_set.format == HV_GENERIC_SET_ALL;
1982
> 1983 if (hc->var_cnt != hweight64(valid_bank_mask))
1984 return HV_STATUS_INVALID_HYPERCALL_INPUT;
1985
1986 if (all_cpus)
1987 goto check_and_send_ipi;
1988
1989 if (!hc->var_cnt)
1990 goto ret_success;
1991
1992 if (kvm_get_sparse_vp_set(kvm, hc, 1, sparse_banks,
1993 offsetof(struct hv_send_ipi_ex,
1994 vp_set.bank_contents)))
1995 return HV_STATUS_INVALID_HYPERCALL_INPUT;
1996 }
1997
1998 check_and_send_ipi:
1999 if ((vector < HV_IPI_LOW_VECTOR) || (vector > HV_IPI_HIGH_VECTOR))
2000 return HV_STATUS_INVALID_HYPERCALL_INPUT;
2001
2002 if (all_cpus) {
2003 kvm_send_ipi_to_many(kvm, vector, NULL);
2004 } else {
2005 sparse_set_to_vcpu_mask(kvm, sparse_banks, valid_bank_mask, vcpu_mask);
2006
2007 kvm_send_ipi_to_many(kvm, vector, vcpu_mask);
2008 }
2009
2010 ret_success:
2011 return HV_STATUS_SUCCESS;
2012 }
2013
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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