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Date: Thu, 13 Oct 2022 21:48:21 +0800
From: kernel test robot <lkp@...el.com>
To: Chao Peng <chao.p.peng@...ux.intel.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Isaku Yamahata <isaku.yamahata@...el.com>
Subject: [intel-tdx:kvm-upstream-workaround 61/352]
arch/x86/kvm/mmu/mmu.c:6908:22: error: no member named 'mem_attr_array' in
'struct kvm'
Hi Chao,
FYI, the error/warning still remains.
tree: https://github.com/intel/tdx.git kvm-upstream-workaround
head: c020b696a242a76a600c1dbb8c038ce2bdc97a8f
commit: fab0f69e33de02a86f43e8ed45f22163db4ec4a0 [61/352] KVM: Update lpage info when private/shared memory are mixed
config: i386-randconfig-a011
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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://github.com/intel/tdx/commit/fab0f69e33de02a86f43e8ed45f22163db4ec4a0
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx kvm-upstream-workaround
git checkout fab0f69e33de02a86f43e8ed45f22163db4ec4a0
# 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 arch/x86/kvm/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
>> arch/x86/kvm/mmu/mmu.c:6908:22: error: no member named 'mem_attr_array' in 'struct kvm'
XA_STATE(xas, &kvm->mem_attr_array, start);
~~~ ^
include/linux/xarray.h:1369:36: note: expanded from macro 'XA_STATE'
struct xa_state name = __XA_STATE(array, index, 0, 0)
^~~~~
include/linux/xarray.h:1348:8: note: expanded from macro '__XA_STATE'
.xa = array, \
^~~~~
>> arch/x86/kvm/mmu/mmu.c:6914:14: error: use of undeclared identifier 'KVM_MEM_ATTR_SHARED'
if (attr == KVM_MEM_ATTR_SHARED) {
^
>> arch/x86/kvm/mmu/mmu.c:6914:14: error: use of undeclared identifier 'KVM_MEM_ATTR_SHARED'
>> arch/x86/kvm/mmu/mmu.c:6914:14: error: use of undeclared identifier 'KVM_MEM_ATTR_SHARED'
>> arch/x86/kvm/mmu/mmu.c:6999:22: error: use of undeclared identifier 'KVM_MEM_ATTR_PRIVATE'
WARN_ONCE(!(attr & (KVM_MEM_ATTR_PRIVATE | KVM_MEM_ATTR_SHARED)),
^
arch/x86/kvm/mmu/mmu.c:6999:45: error: use of undeclared identifier 'KVM_MEM_ATTR_SHARED'
WARN_ONCE(!(attr & (KVM_MEM_ATTR_PRIVATE | KVM_MEM_ATTR_SHARED)),
^
>> arch/x86/kvm/mmu/mmu.c:6991:6: warning: no previous prototype for function 'kvm_arch_update_mem_attr' [-Wmissing-prototypes]
void kvm_arch_update_mem_attr(struct kvm *kvm, unsigned int attr,
^
arch/x86/kvm/mmu/mmu.c:6991:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void kvm_arch_update_mem_attr(struct kvm *kvm, unsigned int attr,
^
static
1 warning and 6 errors generated.
vim +6908 arch/x86/kvm/mmu/mmu.c
6904
6905 static bool mem_attr_is_mixed(struct kvm *kvm, unsigned int attr,
6906 gfn_t start, gfn_t end)
6907 {
> 6908 XA_STATE(xas, &kvm->mem_attr_array, start);
6909 gfn_t gfn = start;
6910 void *entry;
6911 bool shared, private;
6912 bool mixed = false;
6913
> 6914 if (attr == KVM_MEM_ATTR_SHARED) {
6915 shared = true;
6916 private = false;
6917 } else {
6918 shared = false;
6919 private = true;
6920 }
6921
6922 rcu_read_lock();
6923 entry = xas_load(&xas);
6924 while (gfn < end) {
6925 if (xas_retry(&xas, entry))
6926 continue;
6927
6928 KVM_BUG_ON(gfn != xas.xa_index, kvm);
6929
6930 if (entry)
6931 private = true;
6932 else
6933 shared = true;
6934
6935 if (private && shared) {
6936 mixed = true;
6937 goto out;
6938 }
6939
6940 entry = xas_next(&xas);
6941 gfn++;
6942 }
6943 out:
6944 rcu_read_unlock();
6945 return mixed;
6946 }
6947
6948 static inline void update_mixed(struct kvm_lpage_info *linfo, bool mixed)
6949 {
6950 if (mixed)
6951 linfo->disallow_lpage |= KVM_LPAGE_PRIVATE_SHARED_MIXED;
6952 else
6953 linfo->disallow_lpage &= ~KVM_LPAGE_PRIVATE_SHARED_MIXED;
6954 }
6955
6956 static void update_mem_lpage_info(struct kvm *kvm,
6957 struct kvm_memory_slot *slot,
6958 unsigned int attr,
6959 gfn_t start, gfn_t end)
6960 {
6961 unsigned long lpage_start, lpage_end;
6962 unsigned long gfn, pages, mask;
6963 int level;
6964
6965 for (level = PG_LEVEL_2M; level <= KVM_MAX_HUGEPAGE_LEVEL; level++) {
6966 pages = KVM_PAGES_PER_HPAGE(level);
6967 mask = ~(pages - 1);
6968 lpage_start = start & mask;
6969 lpage_end = (end - 1) & mask;
6970
6971 /*
6972 * We only need to scan the head and tail page, for middle pages
6973 * we know they are not mixed.
6974 */
6975 update_mixed(lpage_info_slot(lpage_start, slot, level),
6976 mem_attr_is_mixed(kvm, attr, lpage_start,
6977 lpage_start + pages));
6978
6979 if (lpage_start == lpage_end)
6980 return;
6981
6982 for (gfn = lpage_start + pages; gfn < lpage_end; gfn += pages)
6983 update_mixed(lpage_info_slot(gfn, slot, level), false);
6984
6985 update_mixed(lpage_info_slot(lpage_end, slot, level),
6986 mem_attr_is_mixed(kvm, attr, lpage_end,
6987 lpage_end + pages));
6988 }
6989 }
6990
> 6991 void kvm_arch_update_mem_attr(struct kvm *kvm, unsigned int attr,
6992 gfn_t start, gfn_t end)
6993 {
6994 struct kvm_memory_slot *slot;
6995 struct kvm_memslots *slots;
6996 struct kvm_memslot_iter iter;
6997 int i;
6998
> 6999 WARN_ONCE(!(attr & (KVM_MEM_ATTR_PRIVATE | KVM_MEM_ATTR_SHARED)),
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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