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kvm: Return number of free memslots

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Let's return the number of free slots instead of only checking if there
is a free slot. While at it, check all address spaces, which will also
consider SMM under x86 correctly.

This is a preparation for memory devices that consume multiple memslots.

Message-ID: <20230926185738.277351-5-david@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
David Hildenbrand 2023-09-26 20:57:24 +02:00
parent 022f033bd7
commit 5b23186a95
5 changed files with 25 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/sysemu/kvm.h
View file

@ -215,7 +215,7 @@ typedef struct KVMRouteChange {
/* external API */
bool kvm_has_free_slot(MachineState *ms);
unsigned int kvm_get_free_memslots(void);
bool kvm_has_sync_mmu(void);
int kvm_has_vcpu_events(void);
int kvm_has_robust_singlestep(void);

1
include/sysemu/kvm_int.h
View file

@ -40,6 +40,7 @@ typedef struct KVMMemoryUpdate {
typedef struct KVMMemoryListener {
MemoryListener listener;
KVMSlot *slots;
unsigned int nr_used_slots;
int as_id;
QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_add;
QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_del;