Perform page state conversions to private on a range of pages that are
already in a hypervisor-owned state.
The test introduces support for both 4K pages as well as 2M large pages
depending on the order specified.
Perform a write operation on the pages while they are shared pages. After
conversion, run a re-validation test on one of the converted pages to
ensure the page state is private.
Signed-off-by: Pavan Kumar Paluri <papaluri@xxxxxxx>
---
x86/amd_sev.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/x86/amd_sev.c b/x86/amd_sev.c
index 1723a235166b..6c6fe8e05adb 100644
--- a/x86/amd_sev.c
+++ b/x86/amd_sev.c
@@ -615,6 +615,17 @@ static void test_sev_psc_ghcb_nae(void)
"Write to %d un-encrypted pages after private->shared conversion",
1 << SNP_PSC_ALLOC_ORDER);
+ /* Shared->Private operations */
+ report_info("Shared->Private conversion test using GHCB NAE");
+
+ set_pte_encrypted((unsigned long)vm_pages, 1 << SNP_PSC_ALLOC_ORDER);
+
+ sev_set_pages_state((unsigned long)vm_pages, 1 << SNP_PSC_ALLOC_ORDER,
+ SNP_PAGE_STATE_PRIVATE, ghcb, large_page);
+
+ report(is_validated_private_page((unsigned long)vm_pages, large_page, true),
+ "Expected page state: Private");
+
/* Cleanup */
free_pages_by_order(vm_pages, SNP_PSC_ALLOC_ORDER);
}
--
2.34.1
