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KVM/arm64 fixes for 6.8, take #1

Browse Source 
- Don't source the VFIO Kconfig twice
 
 - Fix protected-mode locking order between kvm and vcpus
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Merge tag 'kvmarm-fixes-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.8, take #1

- Don't source the VFIO Kconfig twice

- Fix protected-mode locking order between kvm and vcpus
This commit is contained in:
Paolo Bonzini 2024-02-16 12:02:31 -05:00
commit 8046fa5fc2
2 changed files with 17 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/kvm/Kconfig
View File

@ -3,7 +3,6 @@
# KVM configuration
#
source "virt/lib/Kconfig"
source "virt/kvm/Kconfig"
menuconfig VIRTUALIZATION

27
arch/arm64/kvm/pkvm.c
View File

@ -101,6 +101,17 @@ void __init kvm_hyp_reserve(void)
hyp_mem_base);
}
static void __pkvm_destroy_hyp_vm(struct kvm *host_kvm)
{
if (host_kvm->arch.pkvm.handle) {
WARN_ON(kvm_call_hyp_nvhe(__pkvm_teardown_vm,
host_kvm->arch.pkvm.handle));
}
host_kvm->arch.pkvm.handle = 0;
free_hyp_memcache(&host_kvm->arch.pkvm.teardown_mc);
}
/*
* Allocates and donates memory for hypervisor VM structs at EL2.
*
@ -181,7 +192,7 @@ static int __pkvm_create_hyp_vm(struct kvm *host_kvm)
return 0;
destroy_vm:
pkvm_destroy_hyp_vm(host_kvm);
__pkvm_destroy_hyp_vm(host_kvm);
return ret;
free_vm:
free_pages_exact(hyp_vm, hyp_vm_sz);
@ -194,23 +205,19 @@ int pkvm_create_hyp_vm(struct kvm *host_kvm)
{
int ret = 0;
mutex_lock(&host_kvm->lock);
mutex_lock(&host_kvm->arch.config_lock);
if (!host_kvm->arch.pkvm.handle)
ret = __pkvm_create_hyp_vm(host_kvm);
mutex_unlock(&host_kvm->lock);
mutex_unlock(&host_kvm->arch.config_lock);
return ret;
}
void pkvm_destroy_hyp_vm(struct kvm *host_kvm)
{
if (host_kvm->arch.pkvm.handle) {
WARN_ON(kvm_call_hyp_nvhe(__pkvm_teardown_vm,
host_kvm->arch.pkvm.handle));
}
host_kvm->arch.pkvm.handle = 0;
free_hyp_memcache(&host_kvm->arch.pkvm.teardown_mc);
mutex_lock(&host_kvm->arch.config_lock);
__pkvm_destroy_hyp_vm(host_kvm);
mutex_unlock(&host_kvm->arch.config_lock);
}
int pkvm_init_host_vm(struct kvm *host_kvm)