From: Maxim Levitsky <mlevitsk@redhat.com>
To: kvm@vger.kernel.org
Cc: Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
linux-kernel@vger.kernel.org, Wanpeng Li <wanpengli@tencent.com>,
Maxim Levitsky <mlevitsk@redhat.com>,
Ingo Molnar <mingo@redhat.com>,
Sean Christopherson <seanjc@google.com>,
x86@kernel.org, Jim Mattson <jmattson@google.com>,
Kees Cook <keescook@chromium.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>, Joerg Roedel <joro@8bytes.org>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: [PATCH v3 00/13] SMM emulation and interrupt shadow fixes
Date: Wed, 3 Aug 2022 18:49:58 +0300 [thread overview]
Message-ID: <20220803155011.43721-1-mlevitsk@redhat.com> (raw)
This patch series is a result of long debug work to find out why
sometimes guests with win11 secure boot
were failing during boot.
During writing a unit test I found another bug, turns out
that on rsm emulation, if the rsm instruction was done in real
or 32 bit mode, KVM would truncate the restored RIP to 32 bit.
I also refactored the way we write SMRAM so it is easier
now to understand what is going on.
The main bug in this series which I fixed is that we
allowed #SMI to happen during the STI interrupt shadow,
and we did nothing to both reset it on #SMI handler
entry and restore it on RSM.
V3: addressed most of the review feedback from Sean (thanks!)
Best regards,
Maxim Levitsky
Maxim Levitsky (13):
bug: introduce ASSERT_STRUCT_OFFSET
KVM: x86: emulator: em_sysexit should update ctxt->mode
KVM: x86: emulator: introduce emulator_recalc_and_set_mode
KVM: x86: emulator: update the emulation mode after rsm
KVM: x86: emulator: update the emulation mode after CR0 write
KVM: x86: emulator/smm: number of GPRs in the SMRAM image depends on
the image format
KVM: x86: emulator/smm: add structs for KVM's smram layout
KVM: x86: emulator/smm: use smram structs in the common code
KVM: x86: emulator/smm: use smram struct for 32 bit smram load/restore
KVM: x86: emulator/smm: use smram struct for 64 bit smram load/restore
KVM: x86: SVM: use smram structs
KVM: x86: SVM: don't save SVM state to SMRAM when VM is not long mode
capable
KVM: x86: emulator/smm: preserve interrupt shadow in SMRAM
arch/x86/include/asm/kvm_host.h | 11 +-
arch/x86/kvm/emulate.c | 305 +++++++++++++++++---------------
arch/x86/kvm/kvm_emulate.h | 223 ++++++++++++++++++++++-
arch/x86/kvm/svm/svm.c | 30 ++--
arch/x86/kvm/vmx/vmcs12.h | 5 +-
arch/x86/kvm/vmx/vmx.c | 4 +-
arch/x86/kvm/x86.c | 175 +++++++++---------
include/linux/build_bug.h | 9 +
8 files changed, 497 insertions(+), 265 deletions(-)
--
2.26.3
next reply other threads:[~2022-08-03 15:50 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-03 15:49 Maxim Levitsky [this message]
2022-08-03 15:49 ` [PATCH v3 01/13] bug: introduce ASSERT_STRUCT_OFFSET Maxim Levitsky
2022-08-03 15:50 ` [PATCH v3 02/13] KVM: x86: emulator: em_sysexit should update ctxt->mode Maxim Levitsky
2022-08-03 15:50 ` [PATCH v3 03/13] KVM: x86: emulator: introduce emulator_recalc_and_set_mode Maxim Levitsky
2022-08-11 15:33 ` Yang, Weijiang
2022-08-12 6:25 ` Maxim Levitsky
2022-08-17 14:42 ` Maxim Levitsky
2022-08-03 15:50 ` [PATCH v3 04/13] KVM: x86: emulator: update the emulation mode after rsm Maxim Levitsky
2022-08-24 21:50 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 05/13] KVM: x86: emulator: update the emulation mode after CR0 write Maxim Levitsky
2022-08-24 21:57 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 06/13] KVM: x86: emulator/smm: number of GPRs in the SMRAM image depends on the image format Maxim Levitsky
2022-08-03 15:50 ` [PATCH v3 07/13] KVM: x86: emulator/smm: add structs for KVM's smram layout Maxim Levitsky
2022-08-24 22:06 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 08/13] KVM: x86: emulator/smm: use smram structs in the common code Maxim Levitsky
2022-08-24 22:25 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 09/13] KVM: x86: emulator/smm: use smram struct for 32 bit smram load/restore Maxim Levitsky
2022-08-24 22:28 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 10/13] KVM: x86: emulator/smm: use smram struct for 64 " Maxim Levitsky
2022-08-24 22:34 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 11/13] KVM: x86: SVM: use smram structs Maxim Levitsky
2022-08-24 22:42 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 12/13] KVM: x86: SVM: don't save SVM state to SMRAM when VM is not long mode capable Maxim Levitsky
2022-08-24 22:58 ` Sean Christopherson
2022-08-03 15:50 ` [PATCH v3 13/13] KVM: x86: emulator/smm: preserve interrupt shadow in SMRAM Maxim Levitsky
2022-08-24 23:50 ` Sean Christopherson
2022-08-25 10:13 ` Maxim Levitsky
2022-08-25 15:44 ` Sean Christopherson
2022-08-10 12:00 ` [PATCH v3 00/13] SMM emulation and interrupt shadow fixes Thomas Lamprecht
2022-08-10 13:25 ` Maxim Levitsky
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