Searched hist:"7 d8c283e10dd818457e7c6a0f729fb03857253ac" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/qemu/target/arm/ |
| H A D | cpu.c | diff 7d8c283e10dd818457e7c6a0f729fb03857253ac Tue Jul 04 08:06:46 CDT 2023 Peter Maydell <peter.maydell@linaro.org> target/arm: Suppress more TCG unimplemented features in ID registers
We already squash the ID register field for FEAT_SPE (the Statistical
Profiling Extension) because TCG does not implement it and if we
advertise it to the guest the guest will crash trying to look at
non-existent system registers. Do the same for some other features
which a real hardware Neoverse-V1 implements but which TCG doesn't:
* FEAT_TRF (Self-hosted Trace Extension)
* Trace Macrocell system register access
* Memory mapped trace
* FEAT_AMU (Activity Monitors Extension)
* FEAT_MPAM (Memory Partitioning and Monitoring Extension)
* FEAT_NV (Nested Virtualization)
Most of these, like FEAT_SPE, are "introspection/trace" type features
which QEMU is unlikely to ever implement. The odd-one-out here is
FEAT_NV -- we could implement that and at some point we probably
will.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230704130647.2842917-2-peter.maydell@linaro.org
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
|