From: Paolo Bonzini <pbonzini@redhat.com>
To: Liran Alon <LIRAN.ALON@ORACLE.COM>, Jim Mattson <jmattson@google.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>,
"kvm list" <kvm@vger.kernel.org>,
"Wanpeng Li" <wanpeng.li@hotmail.com>,
"Idan Brown" <idan.brown@ORACLE.COM>,
"Krish Sadhukhan" <krish.sadhukhan@ORACLE.COM>
Subject: Re: [PATCH v2 3/8] KVM: x86: set/get_events ioctl should consider only injected exceptions
Date: Fri, 24 Nov 2017 00:05:41 +0100 [thread overview]
Message-ID: <b80926dd-013c-706a-3e9a-fc79c3b407e2@redhat.com> (raw)
In-Reply-To: <5A17175A.6070307@ORACLE.COM>
On 23/11/2017 19:45, Liran Alon wrote:
> 3. Use kvm_vcpu_events.reserved[0] and kvm_vcpu_events.reserved[1] for
> exception_extra_info which will be either CR2 for #PF or DR6 for #DB.
> 4. Add to kvm_queued_exception() a u64 exception_extra_info that will
> either be CR2 for #PF or DR6 for #DB. Make sure that these will be set
> on relevant places and filled to vcpu.arch.cr2/VMCS only on
> inject_pending_event() injection of a pending exception.
An aside: just to complicate things a bit, AMD overwrites the actual DR6
(and thus the "guest" DR6) even if you intercept the #DB vmexit.
Paolo
next prev parent reply other threads:[~2017-11-23 23:05 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-21 15:30 [PATCH v2 0/8] KVM: Fix multiple issues in handling pending/injected events Liran Alon
2017-11-21 15:30 ` [PATCH v2 1/8] KVM: VMX: No need to clear pending NMI/interrupt on inject realmode interrupt Liran Alon
2017-12-01 23:45 ` Jim Mattson
2017-12-02 0:19 ` Liran Alon
2017-11-21 15:30 ` [PATCH v2 2/8] KVM: x86: Rename interrupt.pending to interrupt.injected Liran Alon
2017-11-28 17:02 ` Jim Mattson
2017-11-21 15:30 ` [PATCH v2 3/8] KVM: x86: set/get_events ioctl should consider only injected exceptions Liran Alon
2017-11-22 20:25 ` Radim Krčmář
2017-11-23 18:20 ` Liran Alon
2017-11-22 21:00 ` Jim Mattson
2017-11-23 18:45 ` Liran Alon
2017-11-23 23:05 ` Paolo Bonzini [this message]
2017-11-27 17:26 ` Jim Mattson
2017-11-27 18:30 ` Liran Alon
2017-11-21 15:30 ` [PATCH v2 4/8] KVM: x86: Warn if userspace overrides existing injected exception/interrupt Liran Alon
2017-11-22 20:34 ` Radim Krčmář
2017-11-22 22:27 ` Liran Alon
2017-11-21 15:30 ` [PATCH v2 5/8] Revert "kvm: nVMX: Disallow userspace-injected exceptions in guest mode" Liran Alon
2017-11-21 15:30 ` [PATCH v2 6/8] KVM: x86: Fix misleading comments on handling pending exceptions Liran Alon
2017-11-21 15:30 ` [PATCH v2 7/8] KVM: nVMX: Require immediate-exit when event reinjected to L2 and L1 event pending Liran Alon
2017-11-27 20:48 ` Jim Mattson
2017-11-27 22:42 ` Liran Alon
2017-11-28 4:55 ` Jim Mattson
2017-11-28 11:14 ` Paolo Bonzini
2017-11-28 13:59 ` Liran Alon
2017-11-28 11:36 ` Liran Alon
2017-11-28 6:39 ` Jim Mattson
2017-11-28 18:26 ` Jim Mattson
2017-11-28 19:45 ` Liran Alon
2017-11-28 21:04 ` Jim Mattson
2017-11-28 19:33 ` Liran Alon
2017-11-21 15:30 ` [PATCH v2 8/8] KVM: nVMX: Optimization: Dont set KVM_REQ_EVENT when VMExit with nested_run_pending Liran Alon
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