target-i386: use memory API to implement SMRAM

Remove cpu_smm_register and cpu_smm_update.  Instead, each CPU
address space gets an extra region which is an alias of
/machine/smram.  This extra region is enabled or disabled
as the CPU enters/exits SMM.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

3 files changed, 1 insertions, 6 deletions

diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index bec6de1..86c5651 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -210,7 +210,6 @@ void pc_nic_init(ISABus *isa_bus, PCIBus *pci_bus);
 void pc_pci_device_init(PCIBus *pci_bus);
 
 typedef void (*cpu_set_smm_t)(int smm, void *arg);
-void cpu_smm_register(cpu_set_smm_t callback, void *arg);
 
 void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name);
 
diff --git a/include/hw/pci-host/pam.h b/include/hw/pci-host/pam.h
index 4d03e4b..80dd605 100644
--- a/include/hw/pci-host/pam.h
+++ b/include/hw/pci-host/pam.h
@@ -86,10 +86,7 @@ typedef struct PAMMemoryRegion {
     unsigned current;
 } PAMMemoryRegion;
 
-void smram_update(MemoryRegion *smram_region, uint8_t smram,
-                  uint8_t smm_enabled);
-void smram_set_smm(uint8_t *host_smm_enabled, int smm, uint8_t smram,
-                   MemoryRegion *smram_region);
+void smram_update(MemoryRegion *smram_region, uint8_t smram);
 void init_pam(DeviceState *dev, MemoryRegion *ram, MemoryRegion *system,
               MemoryRegion *pci, PAMMemoryRegion *mem, uint32_t start, uint32_t size);
 void pam_update(PAMMemoryRegion *mem, int idx, uint8_t val);
diff --git a/include/hw/pci-host/q35.h b/include/hw/pci-host/q35.h
index 4c9eacc..17adeaa 100644
--- a/include/hw/pci-host/q35.h
+++ b/include/hw/pci-host/q35.h
@@ -55,7 +55,6 @@ typedef struct MCHPCIState {
     MemoryRegion smram_region;
     MemoryRegion smram, low_smram;
     PcPciInfo pci_info;
-    uint8_t smm_enabled;
     ram_addr_t below_4g_mem_size;
     ram_addr_t above_4g_mem_size;
     uint64_t pci_hole64_size;