From: Paolo Bonzini <pbonzini@redhat.com>
To: Nadav Amit <nadav.amit@gmail.com>, Nadav Amit <namit@cs.technion.ac.il>
Cc: gleb@kernel.org, tglx@linutronix.de, mingo@redhat.com,
hpa@zytor.com, x86@kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Subject: Re: [PATCH v2 9/9] KVM: vmx: vmx instructions handling does not consider cs.l
Date: Wed, 18 Jun 2014 18:06:57 +0200 [thread overview]
Message-ID: <53A1B921.1050108@redhat.com> (raw)
In-Reply-To: <53A1B7EE.7070800@gmail.com>
Il 18/06/2014 18:01, Nadav Amit ha scritto:
>>
>
> Perhaps I am missing something, but I don't see where my mistake is.
> The VMREAD source operand is always read as 64-bits and I made no
> changes there. Therefore, if bits 63:32 are not zero, the instruction
> should fail when attempting to access the field.
In 32-bit mode, it should be read as 32 bits: "Outside IA-32e mode, the
source operand has 32 bits, regardless of the value of CS.D" (so it's
never 16 bits, but it's also never 64 bits).
Paolo
next prev parent reply other threads:[~2014-06-18 16:53 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-15 13:12 [PATCH 0/6] KVM: x86: More emulator bugs Nadav Amit
2014-06-15 13:12 ` [PATCH 1/6] KVM: x86: bit-ops emulation ignores offset on 64-bit Nadav Amit
2014-06-15 13:12 ` [PATCH 2/6] KVM: x86: Wrong emulation on 'xadd X, X' Nadav Amit
2014-06-16 17:38 ` Bandan Das
2014-06-17 5:16 ` Paolo Bonzini
2014-06-17 15:35 ` Bandan Das
2014-06-17 16:49 ` Paolo Bonzini
2014-06-15 13:12 ` [PATCH 3/6] KVM: x86: Inter privilage level ret emulation is not implemeneted Nadav Amit
2014-06-15 13:13 ` [PATCH 4/6] KVM: x86: emulation of dword cmov on long-mode should clear [63:32] Nadav Amit
2014-06-15 13:13 ` [PATCH 5/6] KVM: x86: NOP emulation clears (incorrectly) the high 32-bits of RAX Nadav Amit
2014-06-15 13:13 ` [PATCH 6/6] KVM: x86: check DR6/7 high-bits are clear only on long-mode Nadav Amit
2014-06-16 10:17 ` Paolo Bonzini
2014-06-16 10:33 ` Nadav Amit
2014-06-16 11:09 ` Paolo Bonzini
2014-06-16 11:53 ` Nadav Amit
2014-06-16 14:56 ` Paolo Bonzini
2014-06-16 17:07 ` Nadav Amit
2014-06-18 14:19 ` [PATCH v2 0/9] KVM: x86: More emulator bugs Nadav Amit
2014-06-18 14:19 ` [PATCH v2 1/9] KVM: x86: bit-ops emulation ignores offset on 64-bit Nadav Amit
2014-06-18 14:19 ` [PATCH v2 2/9] KVM: x86: Wrong emulation on 'xadd X, X' Nadav Amit
2014-06-18 14:19 ` [PATCH v2 3/9] KVM: x86: Inter privilage level ret emulation is not implemeneted Nadav Amit
2014-06-18 14:19 ` [PATCH v2 4/9] KVM: x86: emulation of dword cmov on long-mode should clear [63:32] Nadav Amit
2014-06-18 14:19 ` [PATCH v2 5/9] KVM: x86: NOP emulation clears (incorrectly) the high 32-bits of RAX Nadav Amit
2014-06-18 14:19 ` [PATCH v2 6/9] KVM: x86: check DR6/7 high-bits are clear only on long-mode Nadav Amit
2014-06-18 14:19 ` [PATCH v2 7/9] KVM: x86: Hypercall handling does not considers opsize correctly Nadav Amit
2014-06-18 14:19 ` [PATCH v2 8/9] KVM: vmx: handle_cr ignores 32/64-bit mode Nadav Amit
2014-06-18 14:19 ` [PATCH v2 9/9] KVM: vmx: vmx instructions handling does not consider cs.l Nadav Amit
2014-06-18 15:41 ` Paolo Bonzini
2014-06-18 16:01 ` Nadav Amit
2014-06-18 16:06 ` Paolo Bonzini [this message]
2014-06-18 17:51 ` Nadav Amit
2014-06-19 9:45 ` Paolo Bonzini
2014-06-18 15:45 ` [PATCH v2 0/9] KVM: x86: More emulator bugs Paolo Bonzini
2014-06-16 10:18 ` [PATCH 0/6] " Paolo Bonzini
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