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| author |   Oliver Upton <oliver.upton@linux.dev> | 2024-06-20 16:46:40 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-06-20 19:01:20 +0000 |
| commit | b3d29a8230998b36afecf494b199211d26052785 (patch) | |
| tree | ae515f6812ada34d266e31c1331933685ff4d8ba /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | KVM: arm64: nv: Forward SVE traps to guest hypervisor (diff) | |
| download | wireguard-linux-b3d29a8230998b36afecf494b199211d26052785.tar.xz wireguard-linux-b3d29a8230998b36afecf494b199211d26052785.zip | |
KVM: arm64: nv: Handle ZCR_EL2 traps
Unlike other SVE-related registers, ZCR_EL2 takes a sysreg trap to EL2
when HCR_EL2.NV = 1. KVM still needs to honor the guest hypervisor's
trap configuration, which expects an SVE trap (i.e. ESR_EL2.EC = 0x19)
when CPTR traps are enabled for the vCPU's current context.
Otherwise, if the guest hypervisor has traps disabled, emulate the
access by mapping the requested VL into ZCR_EL1.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240620164653.1130714-4-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions