Messages in this thread Patch in this message | | | Date | Tue, 17 Jul 2012 22:45:07 +0800 | From | Xiao Guangrong <> | Subject | [PATCH 08/10] KVM: introduce readonly_bad_hva |
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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@linux.vnet.ibm.com> --- virt/kvm/kvm_main.c | 12 +++++++++++- 1 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index b70f1a4..c056736 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -994,9 +994,19 @@ static inline unsigned long bad_hva(void) return PAGE_OFFSET; }
+static inline unsigned long readonly_bad_hva(void) +{ + return PAGE_OFFSET + PAGE_SIZE; +} + +static int kvm_is_readonly_bad_hva(unsigned long addr) +{ + return addr == readonly_bad_hva(); +} + int kvm_is_error_hva(unsigned long addr) { - return addr == bad_hva(); + return addr == bad_hva() || kvm_is_readonly_bad_hva(addr); } EXPORT_SYMBOL_GPL(kvm_is_error_hva);
-- 1.7.7.6
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