motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-05 00:33:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

arm/kvm: add support for MTE

Browse source 
Extend the 'mte' property for the virt machine to cover KVM as
well. For KVM, we don't allocate tag memory, but instead enable the
capability.

If MTE has been enabled, we need to disable migration, as we do not
yet have a way to migrate the tags as well. Therefore, MTE will stay
off with KVM unless requested explicitly.

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230428095533.21747-2-cohuck@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cornelia Huck 2023-04-28 11:55:33 +02:00 • committed by Peter Maydell
parent 96e6d25fdd
commit b320e21c48
6 changed files with 109 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

19
target/arm/kvm_arm.h
View file

@ -313,6 +313,13 @@ bool kvm_arm_pmu_supported(void);
*/
bool kvm_arm_sve_supported(void);
/**
* kvm_arm_mte_supported:
*
* Returns: true if KVM can enable MTE, and false otherwise.
*/
bool kvm_arm_mte_supported(void);
/**
* kvm_arm_get_max_vm_ipa_size:
* @ms: Machine state handle
@ -377,6 +384,8 @@ void kvm_arm_pvtime_init(CPUState *cs, uint64_t ipa);
int kvm_arm_set_irq(int cpu, int irqtype, int irq, int level);
void kvm_arm_enable_mte(Object *cpuobj, Error **errp);
#else
/*
@ -403,6 +412,11 @@ static inline bool kvm_arm_steal_time_supported(void)
return false;
}
static inline bool kvm_arm_mte_supported(void)
{
return false;
}
/*
* These functions should never actually be called without KVM support.
*/
@ -451,6 +465,11 @@ static inline uint32_t kvm_arm_sve_get_vls(CPUState *cs)
g_assert_not_reached();
}
static inline void kvm_arm_enable_mte(Object *cpuobj, Error **errp)
{
g_assert_not_reached();
}
#endif
static inline const char *gic_class_name(void)