| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <7eaf9c55acb56cb6d3d74cac34fdf1436fa2465b.1705965635.git.isaku.yamahata@intel.com> Date: Mon, 22 Jan 2024 15:53:51 -0800 From: isaku.yamahata@...el.com To: kvm@...r.kernel.org, linux-kernel@...r.kernel.org Cc: isaku.yamahata@...el.com, isaku.yamahata@...il.com, Paolo Bonzini <pbonzini@...hat.com>, erdemaktas@...gle.com, Sean Christopherson <seanjc@...gle.com>, Sagi Shahar <sagis@...gle.com>, Kai Huang <kai.huang@...el.com>, chen.bo@...el.com, hang.yuan@...el.com, tina.zhang@...el.com Subject: [PATCH v18 075/121] KVM: TDX: restore debug store when TD exit From: Isaku Yamahata <isaku.yamahata@...el.com> Because debug store is clobbered, restore it on TD exit. Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com> Reviewed-by: Paolo Bonzini <pbonzini@...hat.com> --- arch/x86/events/intel/ds.c | 1 + arch/x86/kvm/vmx/tdx.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index d49d661ec0a7..25670d8a485b 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -2428,3 +2428,4 @@ void perf_restore_debug_store(void) wrmsrl(MSR_IA32_DS_AREA, (unsigned long)ds); } +EXPORT_SYMBOL_GPL(perf_restore_debug_store); diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index 3b2ba9f974be..68a8d01c03bd 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -715,6 +715,7 @@ fastpath_t tdx_vcpu_run(struct kvm_vcpu *vcpu) tdx_vcpu_enter_exit(tdx); tdx_user_return_update_cache(vcpu); + perf_restore_debug_store(); tdx_restore_host_xsave_state(vcpu); tdx->host_state_need_restore = true; -- 2.25.1
Powered by blists - more mailing lists