In order to reduce the impact of the VPT parsing happening on the GIC,
we can split the vcpu reseidency in two phases:
- programming GICR_VPENDBASER: this still happens in vcpu_load()
- checking for the VPT parsing to be complete: this can happen
on vcpu entry (in kvm_vgic_flush_hwstate())
This allows the GIC and the CPU to work in parallel, rewmoving some
of the entry overhead.
Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Shenming Lu <lushenming@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201128141857.983-3-lushenming@huawei.com
(cherry picked from commit 57e3cebd02)
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I5d3b5db2db817e99780e009caf8efe0f6692e0b1
Bug: 178098380
Test: atest VirtualizationHostTestCases on an EL2-enabled device
8b4355a9c1