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Ryan Houdek
82ad26307c
On Fault then ARM will return information about the fault in ESR_EL1 to the user. We need to decode what ESR_EL1 means in the context of the fault to get the flags we care about. The flags we care about specifically are PF_USER and PF_WRITE. PF_PROT would have been interesting but I didn't see when this gets returned to the user. ARM makes the difference if the page is unmapped or "mapped" with PROT_NONE. x86 doesn't make the distinction here. This should fix an issue that a user was hitting.