On Tue, May 13 2025, Eric Auger <[email protected]> wrote:
> On 4/14/25 6:38 PM, Cornelia Huck wrote:
>> From: Eric Auger <[email protected]>
>>
>> At the moment kvm_arm_get_host_cpu_features() reads a subset of the
>> ID regs. As we want to introduce properties for all writable ID reg
>> fields, we want more genericity and read more default host register
>> values.
>>
>> Introduce a new get_host_cpu_idregs() helper and add a new exhaustive
>> boolean parameter to kvm_arm_get_host_cpu_features() and
>> kvm_arm_set_cpu_features_from_host() to select the right behavior.
>> The host cpu model will keep the legacy behavior unless the writable
>> id register interface is available.
>>
>> A writable_map IdRegMap is introduced in the CPU object. A subsequent
>> patch will populate it.
>>
>> Signed-off-by: Eric Auger <[email protected]>
>> Signed-off-by: Cornelia Huck <[email protected]>
>> ---
>> target/arm/cpu-sysregs.h | 2 ++
>> target/arm/cpu.h | 3 ++
>> target/arm/cpu64.c | 2 +-
>> target/arm/kvm.c | 78 ++++++++++++++++++++++++++++++++++++++--
>> target/arm/kvm_arm.h | 9 +++--
>> target/arm/trace-events | 1 +
>> 6 files changed, 89 insertions(+), 6 deletions(-)
>>
(...)
>> diff --git a/target/arm/cpu.h b/target/arm/cpu.h
>> index 775a8aebc5d3..8717c5e7695b 100644
>> --- a/target/arm/cpu.h
>> +++ b/target/arm/cpu.h
>> @@ -1088,6 +1088,9 @@ struct ArchCPU {
>> */
>> ARMIdRegsState writable_id_regs;
>>
>> + /* ID reg writable bitmask (KVM only) */
>> + IdRegMap *writable_map;
> as it is KVM only we may put it in ifdef CONFIG_KVM block above
Forgot to reply here; the CONFIG_KVM block is gone with a725f3710231
("target/arm/cpu: always define kvm related registers")
