From: Nadav Amit <nadav.amit@gmail.com>
To: pbonzini@redhat.com
Cc: kvm@vger.kernel.org
Subject: Regression problem with commit 5045b46803
Date: Wed, 13 Aug 2014 20:14:40 +0300 [thread overview]
Message-ID: <53EB9D00.3050806@gmail.com> (raw)
Commit 5045b46803 added a check that cs.dpl equals cs.rpl during
task-switch. Unfortunately, is causes some of my tests that run well on
bare-metal to fail.
Although this check is mentioned in table 7-1 of the SDM as causing a
#TSS exception, it is not mentioned in table 6-6 that lists "invalid TSS
conditions" which cause #TSS exceptions.
Thus, I recommend on reverting commit 5045b46803, or alternatively
rechecking task-switch behavior on bare-metal.
Nadav
next reply other threads:[~2014-08-13 17:14 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-13 17:14 Nadav Amit [this message]
2014-08-17 6:17 ` Regression problem with commit 5045b46803 Paolo Bonzini
2014-08-17 6:23 ` Nadav Amit
2014-08-17 6:28 ` Paolo Bonzini
2014-08-17 7:19 ` Nadav Amit
2014-08-17 9:35 ` Paolo Bonzini
2014-08-17 19:32 ` [PATCH] KVM: x86: Revert "check CS.DPL against RPL during task switch" Nadav Amit
2014-08-17 19:34 ` [PATCH kvm-unit-tests] x86: Test task-switch with cs.rpl != cs.dpl Nadav Amit
2014-08-19 10:27 ` Paolo Bonzini
2014-08-19 13:04 ` [PATCH kvm-unit-tests v2] " Nadav Amit
2014-08-19 13:28 ` Paolo Bonzini
2014-08-19 13:34 ` Nadav Amit
2014-08-19 13:37 ` Paolo Bonzini
2014-08-17 21:09 ` [PATCH] KVM: x86: Revert "check CS.DPL against RPL during task switch" Paolo Bonzini
2014-08-17 21:13 ` Paolo Bonzini
2014-08-17 21:33 ` Nadav Amit
2014-08-17 21:52 ` Paolo Bonzini
2014-08-17 21:39 ` Nadav Amit
2014-08-17 21:52 ` Paolo Bonzini
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