From: Patrick Roy patrick.roy@linux.dev
x86 supports GUEST_MEMFD_FLAG_NO_DIRECT_MAP whenever direct map modifications are possible (which is always the case).
Signed-off-by: Patrick Roy patrick.roy@linux.dev Signed-off-by: Nikita Kalyazin kalyazin@amazon.com --- arch/x86/include/asm/kvm_host.h | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 5a3bfa293e8b..68bd29a52f24 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -28,6 +28,7 @@ #include <linux/sched/vhost_task.h> #include <linux/call_once.h> #include <linux/atomic.h> +#include <linux/set_memory.h>
#include <asm/apic.h> #include <asm/pvclock-abi.h> @@ -2481,4 +2482,12 @@ static inline bool kvm_arch_has_irq_bypass(void) return enable_device_posted_irqs; }
+#ifdef CONFIG_KVM_GUEST_MEMFD +static inline bool kvm_arch_gmem_supports_no_direct_map(void) +{ + return can_set_direct_map(); +} +#define kvm_arch_gmem_supports_no_direct_map kvm_arch_gmem_supports_no_direct_map +#endif /* CONFIG_KVM_GUEST_MEMFD */ + #endif /* _ASM_X86_KVM_HOST_H */