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[RFC PATCH v4 24/36] i386/tdx: Add TDVF memory via KVM_TDX_INIT_MEM_REGI
From: |
Xiaoyao Li |
Subject: |
[RFC PATCH v4 24/36] i386/tdx: Add TDVF memory via KVM_TDX_INIT_MEM_REGION |
Date: |
Thu, 12 May 2022 11:17:51 +0800 |
From: Isaku Yamahata <isaku.yamahata@intel.com>
TDVF firmware (CODE and VARS) needs to be added/copied to TD's private
memory via KVM_TDX_INIT_MEM_REGION, as well as TD HOB and TEMP memory.
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
target/i386/kvm/tdx.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index 3e18ace90bf7..567ee12e88f0 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -240,6 +240,7 @@ static void tdx_finalize_vm(Notifier *notifier, void
*unused)
{
TdxFirmware *tdvf = &tdx_guest->tdvf;
TdxFirmwareEntry *entry;
+ int r;
tdx_init_ram_entries();
@@ -265,6 +266,29 @@ static void tdx_finalize_vm(Notifier *notifier, void
*unused)
sizeof(TdxRamEntry), &tdx_ram_entry_compare);
tdvf_hob_create(tdx_guest, tdx_get_hob_entry(tdx_guest));
+
+ for_each_tdx_fw_entry(tdvf, entry) {
+ struct kvm_tdx_init_mem_region mem_region = {
+ .source_addr = (__u64)entry->mem_ptr,
+ .gpa = entry->address,
+ .nr_pages = entry->size / 4096,
+ };
+
+ __u32 metadata = entry->attributes & TDVF_SECTION_ATTRIBUTES_MR_EXTEND
?
+ KVM_TDX_MEASURE_MEMORY_REGION : 0;
+
+ r = tdx_vm_ioctl(KVM_TDX_INIT_MEM_REGION, metadata, &mem_region);
+ if (r < 0) {
+ error_report("KVM_TDX_INIT_MEM_REGION failed %s", strerror(-r));
+ exit(1);
+ }
+
+ if (entry->type == TDVF_SECTION_TYPE_TD_HOB ||
+ entry->type == TDVF_SECTION_TYPE_TEMP_MEM) {
+ qemu_ram_munmap(-1, entry->mem_ptr, entry->size);
+ entry->mem_ptr = NULL;
+ }
+ }
}
static Notifier tdx_machine_done_notify = {
--
2.27.0
- [RFC PATCH v4 17/36] i386/tdx: Parse TDVF metadata for TDX VM, (continued)
[RFC PATCH v4 24/36] i386/tdx: Add TDVF memory via KVM_TDX_INIT_MEM_REGION,
Xiaoyao Li <=
[RFC PATCH v4 25/36] i386/tdx: Call KVM_TDX_INIT_VCPU to initialize TDX vcpu, Xiaoyao Li, 2022/05/11
[RFC PATCH v4 23/36] i386/tdx: Setup the TD HOB list, Xiaoyao Li, 2022/05/11
[RFC PATCH v4 27/36] i386/tdx: Disable SMM for TDX VMs, Xiaoyao Li, 2022/05/11