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211cbde764
Currently get_phys_addr() and its various subfunctions return a hard-coded fault status register value for translation failures. This is awkward because FSR values these days may be either long-descriptor format or short-descriptor format. Worse, the right FSR type to use doesn't depend only on the translation table being walked -- some cases, like fault info reported to AArch32 EL2 for some kinds of ATS operation, must be in long-descriptor format even if the translation table being walked was short format. We can't get those cases right with our current approach. Provide fields in the ARMMMUFaultInfo struct which allow get_phys_addr() to provide sufficient information for a caller to construct an FSR value themselves, and utility functions which do this for both long and short format FSR values, as a first step in switching get_phys_addr() and its children to only returning the failure cause in the ARMMMUFaultInfo struct. Backports commit 1fa498fe0de979030bd1f481046e9f1c5574a584 from qemu |
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