Hi, There are two fixes to KVM MMU for TDX in response to two hypothetically triggered errors: (1) errors in tdh_mem_page_add(), (2) fatal errors in tdh_mem_sept_add()/tdh_mem_page_aug(). Patch 1 handles the error in SEPT zap resulting from error (1). Patch 2 fixes a possible stuck in the kernel loop introduced by error (2). (A similar fix in SEPT SEAMCALL local retry is also required if the fix in patch 2 looks good to you). The two errors are not observed in any real workloads yet. The series is tested by faking the error in the SEAMCALL wrapper while bypassing the real SEAMCALLs. Thanks Yan Yan Zhao (2): KVM: TDX: Handle SEPT zap error due to page add error in premap KVM: x86/mmu: Bail out kvm_tdp_map_page() when VM dead arch/x86/kvm/mmu/mmu.c | 4 +++ arch/x86/kvm/vmx/tdx.c | 64 +++++++++++++++++++++++++++++------------- 2 files changed, 49 insertions(+), 19 deletions(-) -- 2.43.2
