Marcelo Tosatti wrote:
Account pages that only have global entries. Such pages need to be
synced on cr4 writes, but not cr3 writes.
@@ -1147,18 +1148,22 @@ struct page *gva_to_page(struct kvm_vcpu
static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
unsigned pt_access, unsigned pte_access,
int user_fault, int write_fault, int dirty,
- int *ptwrite, int largepage, gfn_t gfn,
- pfn_t pfn, bool speculative)
+ int global, int *ptwrite, int largepage,
+ gfn_t gfn, pfn_t pfn, bool speculative)
bool global
One option to stop the ever-increasing m_s_s() parameter list is to put
it into pte_access. Not sure if it's a good idea.
===================================================================
--- kvm.orig/include/asm-x86/kvm_host.h
+++ kvm/include/asm-x86/kvm_host.h
@@ -199,6 +199,7 @@ struct kvm_mmu_page {
u64 *parent_pte; /* !multimapped */
struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
};
+ unsigned long flags;
};
bool global;
(or: bool global : 1; if we run out of space)
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
int kvm_age_hva(struct kvm *kvm, unsigned long hva);
+enum kvm_page_flags {
+ KVM_PG_global,
+};
+
+#define KVMPGFLAG(name)
\
+static inline int kvm_page_##name(struct kvm_mmu_page *sp) \
+ { return test_bit(KVM_PG_##name, &sp->flags); } \
+static inline void kvm_set_pg_##name(struct kvm_mmu_page *sp) \
+ { set_bit(KVM_PG_##name, &sp->flags); } \
+static inline void kvm_clear_pg_##name(struct kvm_mmu_page *sp)
\
+ { clear_bit(KVM_PG_##name, &sp->flags); } \
+static inline int kvm_test_clear_pg_##name(struct kvm_mmu_page *sp) \
+ { return test_and_clear_bit(KVM_PG_##name, &sp->flags); }
+
+KVMPGFLAG(global);
+
Ugh. Note you're using locked operations even though the structure is
protected by the mmu lock.
--
error compiling committee.c: too many arguments to function
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