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target/ppc: Generate storage interrupts for radix RC changes
Change radix model to always generate a storage interrupt when the R/C bits are not set appropriately in a PTE instead of setting the bits itself. According to the ISA both behaviors are valid, but in practice this change more closely matches behavior observed on the POWER9 CPU. From the POWER9 Processor User's Manual, Section 4.10.13.1: "When performing Radix translation, the POWER9 hardware triggers the appropriate interrupt ... for the mode and type of access whenever Reference (R) and Change (C) bits require setting in either the guest or host page-table entry (PTE)." Signed-off-by: Shawn Anastasio <sanastasio@raptorengineering.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
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