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hw/arm/virt: Disable LPA2 for -machine virt-6.2 

There is a Linux kernel bug present until v5.12 that prevents
booting with FEAT_LPA2 enabled.  As a workaround for TCG,
disable this feature for machine versions prior to 7.0.

Cc: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-03-01 11:59:58 -10:00 committed by Peter Maydell
parent 69b2265d5f
commit 0942820408
2 changed files with 8 additions and 0 deletions
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7
hw/arm/virt.c
View File

@ -2102,6 +2102,10 @@ static void machvirt_init(MachineState *machine)
object_property_set_bool(cpuobj, "pmu", false, NULL);
}
if (vmc->no_tcg_lpa2 && object_property_find(cpuobj, "lpa2")) {
object_property_set_bool(cpuobj, "lpa2", false, NULL);
}
if (object_property_find(cpuobj, "reset-cbar")) {
object_property_set_int(cpuobj, "reset-cbar",
vms->memmap[VIRT_CPUPERIPHS].base,
@ -3020,8 +3024,11 @@ DEFINE_VIRT_MACHINE_AS_LATEST(7, 0)
static void virt_machine_6_2_options(MachineClass *mc)
{
VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
virt_machine_7_0_options(mc);
compat_props_add(mc->compat_props, hw_compat_6_2, hw_compat_6_2_len);
vmc->no_tcg_lpa2 = true;
}
DEFINE_VIRT_MACHINE(6, 2)

1
include/hw/arm/virt.h
View File

@ -132,6 +132,7 @@ struct VirtMachineClass {
bool no_secure_gpio;
/* Machines < 6.2 have no support for describing cpu topology to guest */
bool no_cpu_topology;
bool no_tcg_lpa2;
};
struct VirtMachineState {