linux/virt/kvm/arm
Ard Biesheuvel ba56bc3a07 KVM: arm/arm64: Drop resource size check for GICV window
When booting a 64 KB pages kernel on a ACPI GICv3 system that
implements support for v2 emulation, the following warning is
produced

  GICV size 0x2000 not a multiple of page size 0x10000

and support for v2 emulation is disabled, preventing GICv2 VMs
from being able to run on such hosts.

The reason is that vgic_v3_probe() performs a sanity check on the
size of the window (it should be a multiple of the page size),
while the ACPI MADT parsing code hardcodes the size of the window
to 8 KB. This makes sense, considering that ACPI does not bother
to describe the size in the first place, under the assumption that
platforms implementing ACPI will follow the architecture and not
put anything else in the same 64 KB window.

So let's just drop the sanity check altogether, and assume that
the window is at least 64 KB in size.

Fixes: 9097773245 ("KVM: arm/arm64: vgic-new: vgic_init: implement kvm_vgic_hyp_init")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-06-21 09:14:44 +01:00
..
hyp kvm/arm fixes for 4.16, take 2 2018-03-19 17:43:01 +00:00
vgic KVM: arm/arm64: Drop resource size check for GICV window 2018-06-21 09:14:44 +01:00
aarch32.c KVM: arm/arm64: Prepare to handle deferred save/restore of SPSR_EL1 2018-03-19 10:53:17 +00:00
arch_timer.c kvm/arm fixes for 4.16, take 2 2018-03-19 17:43:01 +00:00
arm.c Small update for KVM. 2018-06-12 11:34:04 -07:00
mmio.c KVM: Fix stack-out-of-bounds read in write_mmio 2017-12-18 12:57:01 +01:00
mmu.c signal: Ensure every siginfo we send has all bits initialized 2018-04-25 10:40:51 -05:00
perf.c KVM: arm/arm64: Move shared files to virt/kvm/arm 2017-05-04 13:57:26 +02:00
pmu.c KVM: arm64: Rewrite system register accessors to read/write functions 2018-03-19 10:53:16 +00:00
psci.c arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID 2018-05-31 18:00:59 +01:00
trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00