Revert "target/arm: Make number of counters in PMCR follow the CPU"

This reverts commit f7fb73b8cd.

This change turned out to be a bit half-baked, and doesn't
work with KVM, which fails with the error:
   "qemu-system-aarch64: Failed to retrieve host CPU features"

because KVM does not allow accessing of the PMCR_EL0 value in
the scratch "query CPU ID registers" VM unless we have first
set the KVM_ARM_VCPU_PMU_V3 feature on the VM.

Revert the change for 6.0.

Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Zenghui Yu <yuzenghui@huawei.com>
Message-id: 20210331154822.23332-1-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-03-31 16:48:22 +01:00
parent e7e0d52dc6
commit 21c2dd77a6
5 changed files with 12 additions and 28 deletions

View file

@ -942,7 +942,6 @@ struct ARMCPU {
uint64_t id_aa64mmfr2;
uint64_t id_aa64dfr0;
uint64_t id_aa64dfr1;
uint64_t reset_pmcr_el0;
} isar;
uint64_t midr;
uint32_t revidr;