Messages in this thread Patch in this message | | | Date | Fri, 04 Feb 2022 14:35:47 -0300 | From | Marcelo Tosatti <> | Subject | [patch v11 10/13] KVM: x86: process isolation work from VM-entry code path |
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VM-entry code path is an entry point similar to userspace return when task isolation is concerned.
Call isolation_exit_to_user_mode before VM-enter.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
--- v11 - Add TIF_TASK_ISOL bit to thread info flags and use it to decide whether to perform task isolation work on return to userspace (Frederic W. Weisbecker)
include/linux/entry-kvm.h | 4 +++- kernel/entry/kvm.c | 18 ++++++++++++++---- 2 files changed, 17 insertions(+), 5 deletions(-)
Index: linux-2.6/kernel/entry/kvm.c =================================================================== --- linux-2.6.orig/kernel/entry/kvm.c +++ linux-2.6/kernel/entry/kvm.c @@ -2,6 +2,7 @@ #include <linux/entry-kvm.h> #include <linux/kvm_host.h> +#include <linux/task_isolation.h> static int xfer_to_guest_mode_work(struct kvm_vcpu *vcpu, unsigned long ti_work) { @@ -22,6 +23,9 @@ static int xfer_to_guest_mode_work(struc if (ti_work & _TIF_NOTIFY_RESUME) tracehook_notify_resume(NULL); + if (ti_work & _TIF_TASK_ISOL) + task_isol_exit_to_user_mode(); + ret = arch_xfer_to_guest_mode_handle_work(vcpu, ti_work); if (ret) return ret;
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