On 11/18/2023 4:35 AM, Isaku Yamahata wrote:
On Wed, Nov 15, 2023 at 02:14:11AM -0500, Xiaoyao Li <xiaoyao.li@xxxxxxxxx> wrote:diff --git a/system/physmem.c b/system/physmem.c index fc2b0fee0188..0af2213cbd9c 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -1841,6 +1841,20 @@ static void ram_block_add(RAMBlock *new_block, Error **errp) } }+#ifdef CONFIG_KVM+ if (kvm_enabled() && new_block->flags & RAM_GUEST_MEMFD && + new_block->guest_memfd < 0) { + /* TODO: to decide if KVM_GUEST_MEMFD_ALLOW_HUGEPAGE is supported */ + uint64_t flags = 0; + new_block->guest_memfd = kvm_create_guest_memfd(new_block->max_length, + flags, errp); + if (new_block->guest_memfd < 0) { + qemu_mutex_unlock_ramlist(); + return; + } + } +#endif +We should define kvm_create_guest_memfd() stub in accel/stub/kvm-stub.c. We can remove this #ifdef.
Nice suggestion! Will use stub.
