In the later patch, it indicates failure when we try to get a writable
hva from the readonly slot
Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
---
include/linux/kvm_host.h | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 7737e45..2df6861 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -77,11 +77,12 @@ static inline bool is_invalid_pfn(pfn_t pfn)
return !is_noslot_pfn(pfn) && is_error_pfn(pfn);
}
-#define KVM_HVA_ERR_BAD (PAGE_OFFSET)
+#define KVM_HVA_ERR_BAD (PAGE_OFFSET)
+#define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE)
static inline bool kvm_is_error_hva(unsigned long addr)
{
- return addr == PAGE_OFFSET;
+ return addr >= PAGE_OFFSET;
}
#define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
--
1.7.7.6
--
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