Re: [PATCH v13 13/35] KVM: Introduce per-page memory attributes
From: David Matlack <dmatlack@google.com>
Date: 2023-10-31 16:43:42
Also in:
kvm, kvm-riscv, kvmarm, linux-arm-kernel, linux-fsdevel, linux-mips, linux-mm, linux-riscv, lkml
On 2023-10-27 11:21 AM, Sean Christopherson wrote:
quoted hunk ↗ jump to hunk
From: Chao Peng <redacted>diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 89c1a991a3b8..df573229651b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h@@ -808,6 +809,9 @@ struct kvm { #ifdef CONFIG_HAVE_KVM_PM_NOTIFIER struct notifier_block pm_notifier; +#endif +#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES + struct xarray mem_attr_array;
Please document how access to mem_attr_array is synchronized. If I'm reading the code correctly I think it's... /* Protected by slots_locks (for writes) and RCU (for reads) */