diff mbox series

[v19,061/130] KVM: x86/tdp_mmu: Sprinkle __must_check

Message ID 6dd201694cf2ce7f866e0634c3113db7a9024f8b.1708933498.git.isaku.yamahata@intel.com (mailing list archive)
State New, archived
Headers show
Series [v19,001/130] x86/virt/tdx: Rename _offset to _member for TD_SYSINFO_MAP() macro | expand

Commit Message

Isaku Yamahata Feb. 26, 2024, 8:26 a.m. UTC 
From: Isaku Yamahata <isaku.yamahata@intel.com>

TDP MMU allows tdp_mmu_set_spte_atomic() and tdp_mmu_zap_spte_atomic() to
return -EBUSY or -EAGAIN error.  The caller must check the return value and
retry.  Sprinkle __must_check to guarantee it.

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
--
v19:
- Added Reviewed-by: Binbin
---
 arch/x86/kvm/mmu/tdp_mmu.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 10507920f36b..a90907b31c54 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -507,9 +507,9 @@  static void handle_changed_spte(struct kvm *kvm, int as_id, gfn_t gfn,
  *            no side-effects other than setting iter->old_spte to the last
  *            known value of the spte.
  */
-static inline int tdp_mmu_set_spte_atomic(struct kvm *kvm,
-					  struct tdp_iter *iter,
-					  u64 new_spte)
+static inline int __must_check tdp_mmu_set_spte_atomic(struct kvm *kvm,
+						       struct tdp_iter *iter,
+						       u64 new_spte)
 {
 	u64 *sptep = rcu_dereference(iter->sptep);
 
@@ -539,8 +539,8 @@  static inline int tdp_mmu_set_spte_atomic(struct kvm *kvm,
 	return 0;
 }
 
-static inline int tdp_mmu_zap_spte_atomic(struct kvm *kvm,
-					  struct tdp_iter *iter)
+static inline int __must_check tdp_mmu_zap_spte_atomic(struct kvm *kvm,
+						       struct tdp_iter *iter)
 {
 	int ret;