From 825f9f21aae8dd655126b50de70210bacbd330f9 Mon Sep 17 00:00:00 2001 From: Alexander Potapenko Date: Fri, 14 Nov 2025 17:46:50 +0100 Subject: executor: x86: Configure L1 guest TSS for nested virtualization Set up the L1 guest's 64-bit Task State Segment (TSS), a prerequisite for VMX/SVM. --- executor/kvm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'executor/kvm.h') diff --git a/executor/kvm.h b/executor/kvm.h index 835d717ae..ec6fdccc3 100644 --- a/executor/kvm.h +++ b/executor/kvm.h @@ -48,6 +48,7 @@ // Pool of 32 pages for dynamic PT/PD allocations. #define X86_SYZOS_ADDR_PT_POOL 0x5000 #define X86_SYZOS_ADDR_VAR_IDT 0x25000 +#define X86_SYZOS_ADDR_VAR_TSS 0x26000 #define X86_SYZOS_ADDR_SMRAM 0x30000 // Write to this page to trigger a page fault and stop KVM_RUN. @@ -124,6 +125,7 @@ // SYZOS segment selectors #define X86_SYZOS_SEL_CODE 0x8 #define X86_SYZOS_SEL_DATA 0x10 +#define X86_SYZOS_SEL_TSS64 0x18 #define X86_CR0_PE 1ULL #define X86_CR0_MP (1ULL << 1) -- cgit mrf-deployment