evan/qemu-xteink
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

physmem: Add helper function to destroy CPU AddressSpace

Browse Source 
Virtual CPU Hot-unplug leads to unrealization of a CPU object. This also
involves destruction of the CPU AddressSpace. Add common function to help
destroy the CPU AddressSpace.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Tested-by: Xianglai Li <lixianglai@loongson.cn>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Tested-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20240716111502.202344-7-salil.mehta@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Salil Mehta
2024-07-16 12:15:01 +01:00
committed by Michael S. Tsirkin
parent efdb43b831
commit 24bec42f3d
3 changed files with 38 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
system/physmem.c
+29
View File
@@ -763,6 +763,7 @@ void cpu_address_space_init(CPUState *cpu, int asidx,
if (!cpu->cpu_ases) {
cpu->cpu_ases = g_new0(CPUAddressSpace, cpu->num_ases);
cpu->cpu_ases_count = cpu->num_ases;
}
newas = &cpu->cpu_ases[asidx];
@@ -776,6 +777,34 @@ void cpu_address_space_init(CPUState *cpu, int asidx,
}
}
void cpu_address_space_destroy(CPUState *cpu, int asidx)
{
CPUAddressSpace *cpuas;
assert(cpu->cpu_ases);
assert(asidx >= 0 && asidx < cpu->num_ases);
/* KVM cannot currently support multiple address spaces. */
assert(asidx == 0 || !kvm_enabled());
cpuas = &cpu->cpu_ases[asidx];
if (tcg_enabled()) {
memory_listener_unregister(&cpuas->tcg_as_listener);
}
address_space_destroy(cpuas->as);
g_free_rcu(cpuas->as, rcu);
if (asidx == 0) {
/* reset the convenience alias for address space 0 */
cpu->as = NULL;
}
if (--cpu->cpu_ases_count == 0) {
g_free(cpu->cpu_ases);
cpu->cpu_ases = NULL;
}
}
AddressSpace *cpu_get_address_space(CPUState *cpu, int asidx)
{
/* Return the AddressSpace corresponding to the specified index */