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dragonheart_kernel_oneplus_sm8150
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virt: Import OnePlus Changes 

Signed-off-by: Cyber Knight <cyberknight755@gmail.com>
This commit is contained in:
Cyber Knight 2021-09-26 02:20:13 +08:00
parent 78dec0b497
commit ace2087e70
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GPG Key ID: 23BD4CCD326E9D64
2 changed files with 15 additions and 13 deletions
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6
virt/kvm/arm/mmu.c
View File

@ -307,6 +307,12 @@ static void unmap_stage2_range(struct kvm *kvm, phys_addr_t start, u64 size)
next = stage2_pgd_addr_end(addr, end);
if (!stage2_pgd_none(*pgd))
unmap_stage2_puds(kvm, pgd, addr, next);
/*
* If the range is too large, release the kvm->mmu_lock
* to prevent starvation and lockup detector warnings.
*/
if (next != end)
cond_resched_lock(&kvm->mmu_lock);
} while (pgd++, addr = next, addr != end);
}

22
virt/kvm/kvm_main.c
View File

@ -165,7 +165,6 @@ bool kvm_is_reserved_pfn(kvm_pfn_t pfn)
*/
if (pfn_valid(pfn))
return PageReserved(pfn_to_page(pfn)) &&
!is_zero_pfn(pfn) &&
!kvm_is_zone_device_pfn(pfn);
return true;
@ -3689,7 +3688,7 @@ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
struct kvm_io_device *dev)
{
int i, j;
int i;
struct kvm_io_bus *new_bus, *bus;
bus = kvm_get_bus(kvm, bus_idx);
@ -3706,20 +3705,17 @@ void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
new_bus = kmalloc(sizeof(*bus) + ((bus->dev_count - 1) *
sizeof(struct kvm_io_range)), GFP_KERNEL);
if (new_bus) {
memcpy(new_bus, bus, sizeof(*bus) + i * sizeof(struct kvm_io_range));
new_bus->dev_count--;
memcpy(new_bus->range + i, bus->range + i + 1,
(new_bus->dev_count - i) * sizeof(struct kvm_io_range));
} else {
if (!new_bus) {
pr_err("kvm: failed to shrink bus, removing it completely\n");
for (j = 0; j < bus->dev_count; j++) {
if (j == i)
continue;
kvm_iodevice_destructor(bus->range[j].dev);
}
goto broken;
}
memcpy(new_bus, bus, sizeof(*bus) + i * sizeof(struct kvm_io_range));
new_bus->dev_count--;
memcpy(new_bus->range + i, bus->range + i + 1,
(new_bus->dev_count - i) * sizeof(struct kvm_io_range));
broken:
rcu_assign_pointer(kvm->buses[bus_idx], new_bus);
synchronize_srcu_expedited(&kvm->srcu);
kfree(bus);