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Merge branches 'kvm-arm64/pt-new' and 'kvm-arm64/pmu-5.9' into kvmarm-master/next 

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2020-10-02 09:25:55 +01:00
parent 14ef9d0492 ffd1b63a58 030bdf3698
commit 4e5dc64c43
3 changed files with 30 additions and 21 deletions
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26
Documentation/virt/kvm/devices/vcpu.rst
View File

@ -67,25 +67,25 @@ irqchip.
:Returns:
======= ======================================================
-ENODEV: PMUv3 not supported or GIC not initialized
-ENXIO: PMUv3 not properly configured or in-kernel irqchip not
-ENODEV PMUv3 not supported or GIC not initialized
-ENXIO PMUv3 not properly configured or in-kernel irqchip not
configured as required prior to calling this attribute
-EBUSY: PMUv3 already initialized
-EINVAL: Invalid filter range
-EBUSY PMUv3 already initialized
-EINVAL Invalid filter range
======= ======================================================
Request the installation of a PMU event filter described as follows:
Request the installation of a PMU event filter described as follows::
struct kvm_pmu_event_filter {
__u16 base_event;
__u16 nevents;
struct kvm_pmu_event_filter {
__u16 base_event;
__u16 nevents;
#define KVM_PMU_EVENT_ALLOW 0
#define KVM_PMU_EVENT_DENY 1
#define KVM_PMU_EVENT_ALLOW 0
#define KVM_PMU_EVENT_DENY 1
__u8 action;
__u8 pad[3];
};
__u8 action;
__u8 pad[3];
};
A filter range is defined as the range [@base_event, @base_event + @nevents),
together with an @action (KVM_PMU_EVENT_ALLOW or KVM_PMU_EVENT_DENY). The

23
arch/arm64/kvm/hyp/pgtable.c
View File

@ -694,6 +694,7 @@ struct stage2_attr_data {
kvm_pte_t attr_set;
kvm_pte_t attr_clr;
kvm_pte_t pte;
u32 level;
};
static int stage2_attr_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep,
@ -706,6 +707,7 @@ static int stage2_attr_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep,
if (!kvm_pte_valid(pte))
return 0;
data->level = level;
data->pte = pte;
pte &= ~data->attr_clr;
pte |= data->attr_set;
@ -723,7 +725,8 @@ static int stage2_attr_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep,
static int stage2_update_leaf_attrs(struct kvm_pgtable *pgt, u64 addr,
u64 size, kvm_pte_t attr_set,
kvm_pte_t attr_clr, kvm_pte_t *orig_pte)
kvm_pte_t attr_clr, kvm_pte_t *orig_pte,
u32 *level)
{
int ret;
kvm_pte_t attr_mask = KVM_PTE_LEAF_ATTR_LO | KVM_PTE_LEAF_ATTR_HI;
@ -743,20 +746,24 @@ static int stage2_update_leaf_attrs(struct kvm_pgtable *pgt, u64 addr,
if (orig_pte)
*orig_pte = data.pte;
if (level)
*level = data.level;
return 0;
}
int kvm_pgtable_stage2_wrprotect(struct kvm_pgtable *pgt, u64 addr, u64 size)
{
return stage2_update_leaf_attrs(pgt, addr, size, 0,
KVM_PTE_LEAF_ATTR_LO_S2_S2AP_W, NULL);
KVM_PTE_LEAF_ATTR_LO_S2_S2AP_W,
NULL, NULL);
}
kvm_pte_t kvm_pgtable_stage2_mkyoung(struct kvm_pgtable *pgt, u64 addr)
{
kvm_pte_t pte = 0;
stage2_update_leaf_attrs(pgt, addr, 1, KVM_PTE_LEAF_ATTR_LO_S2_AF, 0,
&pte);
&pte, NULL);
dsb(ishst);
return pte;
}
@ -765,7 +772,7 @@ kvm_pte_t kvm_pgtable_stage2_mkold(struct kvm_pgtable *pgt, u64 addr)
{
kvm_pte_t pte = 0;
stage2_update_leaf_attrs(pgt, addr, 1, 0, KVM_PTE_LEAF_ATTR_LO_S2_AF,
&pte);
&pte, NULL);
/*
* "But where's the TLBI?!", you scream.
* "Over in the core code", I sigh.
@ -778,7 +785,7 @@ kvm_pte_t kvm_pgtable_stage2_mkold(struct kvm_pgtable *pgt, u64 addr)
bool kvm_pgtable_stage2_is_young(struct kvm_pgtable *pgt, u64 addr)
{
kvm_pte_t pte = 0;
stage2_update_leaf_attrs(pgt, addr, 1, 0, 0, &pte);
stage2_update_leaf_attrs(pgt, addr, 1, 0, 0, &pte, NULL);
return pte & KVM_PTE_LEAF_ATTR_LO_S2_AF;
}
@ -786,6 +793,7 @@ int kvm_pgtable_stage2_relax_perms(struct kvm_pgtable *pgt, u64 addr,
enum kvm_pgtable_prot prot)
{
int ret;
u32 level;
kvm_pte_t set = 0, clr = 0;
if (prot & KVM_PGTABLE_PROT_R)
@ -797,8 +805,9 @@ int kvm_pgtable_stage2_relax_perms(struct kvm_pgtable *pgt, u64 addr,
if (prot & KVM_PGTABLE_PROT_X)
clr |= KVM_PTE_LEAF_ATTR_HI_S2_XN;
ret = stage2_update_leaf_attrs(pgt, addr, 1, set, clr, NULL);
kvm_call_hyp(__kvm_tlb_flush_vmid_ipa, pgt->mmu, addr, 0);
ret = stage2_update_leaf_attrs(pgt, addr, 1, set, clr, NULL, &level);
if (!ret)
kvm_call_hyp(__kvm_tlb_flush_vmid_ipa, pgt->mmu, addr, level);
return ret;
}

2
arch/arm64/kvm/mmu.c
View File

@ -742,7 +742,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
struct kvm_memory_slot *memslot, unsigned long hva,
unsigned long fault_status)
{
int ret;
int ret = 0;
bool write_fault, writable, force_pte = false;
bool exec_fault;
bool device = false;