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hw/intc/arm_gicv3: Use correct number of priority bits for the CPU

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Make the GICv3 set its number of bits of physical priority from the
implementation-specific value provided in the CPU state struct, in
the same way we already do for virtual priority bits.  Because this
would be a migration compatibility break, we provide a property
force-8-bit-prio which is enabled for 7.0 and earlier versioned board
models to retain the legacy "always use 8 bits" behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220512151457.3899052-6-peter.maydell@linaro.org
Message-id: 20220506162129.2896966-5-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-05-12 16:14:56 +01:00
parent 84597ff394
commit 39f29e5993
6 changed files with 27 additions and 5 deletions
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1
include/hw/intc/arm_gicv3_common.h
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@ -248,6 +248,7 @@ struct GICv3State {
uint32_t revision;
bool lpi_enable;
bool security_extn;
bool force_8bit_prio;
bool irq_reset_nonsecure;
bool gicd_no_migration_shift_bug;