Paul Mackerras 4cf302bc10 KVM: PPC: Allow for read-only pages backing a Book3S HV guest ... With this, if a guest does an H_ENTER with a read/write HPTE on a page which is currently read-only, we make the actual HPTE inserted be a read-only version of the HPTE. We now intercept protection faults as well as HPTE not found faults, and for a protection fault we work out whether it should be reflected to the guest (e.g. because the guest HPTE didn't allow write access to usermode) or handled by switching to kernel context and calling kvmppc_book3s_hv_page_fault, which will then request write access to the page and update the actual HPTE. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>		2012-03-05 14:52:38 +02:00
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asm	KVM: PPC: Allow for read-only pages backing a Book3S HV guest	2012-03-05 14:52:38 +02:00