Merge tag 'kvm-riscv-fixes-6.7-1' of https://github.com/kvm-riscv/linux into kvm-master

KVM/riscv fixes for 6.7, take #1

- Fix a race condition in updating external interrupt for
  trap-n-emulated IMSIC swfile
- Fix print_reg defaults in get-reg-list selftest

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/x86/mm/mem_encrypt_amd.c b/arch/x86/mm/mem_encrypt_amd.c
index a68f2dda0948..70b91de2e053 100644
--- a/arch/x86/mm/mem_encrypt_amd.c
+++ b/arch/x86/mm/mem_encrypt_amd.c
@@ -32,6 +32,7 @@
 #include <asm/msr.h>
 #include <asm/cmdline.h>
 #include <asm/sev.h>
+#include <asm/ia32.h>
 
 #include "mm_internal.h"
 
@@ -481,6 +482,16 @@ void __init sme_early_init(void)
 	 */
 	if (sev_status & MSR_AMD64_SEV_ES_ENABLED)
 		x86_cpuinit.parallel_bringup = false;
+
+	/*
+	 * The VMM is capable of injecting interrupt 0x80 and triggering the
+	 * compatibility syscall path.
+	 *
+	 * By default, the 32-bit emulation is disabled in order to ensure
+	 * the safety of the VM.
+	 */
+	if (sev_status & MSR_AMD64_SEV_ENABLED)
+		ia32_disable();
 }
 
 void __init mem_encrypt_free_decrypted_mem(void)