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David Gibson authored
BEHAVIOUR CHANGE Currently if ppc_hash{32,64}_translate() finds a PTE matching the given virtual address, it will always update the PTE's R & C (Referenced and Changed) bits. This happens even if the PTE's permissions mean we are about to deny the translation. This is clearly a bug, although we get away with it because: a) It will only incorrectly set, never reset the bits, which should not cause guest correctness problems. b) Linux guests never use the R & C bits anyway. This patch fixes the behaviour, only updating R & C when access is granted by the PTE. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
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