From: "Radim Krčmář" <rkrcmar@redhat.com>
To: Nadav Amit <namit@cs.technion.ac.il>
Cc: pbonzini@redhat.com, kvm@vger.kernel.org, nadav.amit@gmail.com
Subject: Re: [PATCH 6/6] KVM: x86: Emulator does not calculate address correctly
Date: Wed, 1 Oct 2014 19:21:59 +0200 [thread overview]
Message-ID: <20141001172158.GA6372@potion.brq.redhat.com> (raw)
In-Reply-To: <1412099359-5316-7-git-send-email-namit@cs.technion.ac.il>
2014-09-30 20:49+0300, Nadav Amit:
> In long-mode, when the address size is 4 bytes, the linear address is not
> truncated as the emulator mistakenly does. Instead, the offset within the
> segment (the ea field) should be truncated according to the address size.
>
> As Intel SDM says: "In 64-bit mode, the effective address components are added
> and the effective address is truncated ... before adding the full 64-bit
> segment base."
>
> Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
> ---
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
prev parent reply other threads:[~2014-10-01 17:22 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-30 17:49 [PATCH 0/6] KVM: x86: Miscellaneous bug fixes Nadav Amit
2014-09-30 17:49 ` [PATCH 1/6] KVM: x86: DR7.GD should be cleared upon any #DB exception Nadav Amit
2014-10-01 15:24 ` Radim Krčmář
2014-10-01 18:22 ` Nadav Amit
2014-10-01 19:22 ` Radim Krčmář
2014-09-30 17:49 ` [PATCH 2/6] KVM: x86: Wrong error code on limit violation during emulation Nadav Amit
2014-10-01 15:44 ` Radim Krčmář
2014-10-27 14:37 ` Paolo Bonzini
2014-10-27 14:46 ` Nadav Amit
2014-10-27 14:48 ` Paolo Bonzini
2014-09-30 17:49 ` [PATCH 3/6] KVM: x86: NoBigReal was mistakenly considering la instead of ea Nadav Amit
2014-10-01 15:58 ` Radim Krčmář
2014-10-02 14:52 ` Nadav Amit
2014-10-03 12:50 ` Radim Krčmář
2014-10-06 15:19 ` Nadav Amit
2014-09-30 17:49 ` [PATCH 4/6] KVM: x86: Fix determining flat mode in recalculate_apic_map Nadav Amit
2014-10-01 16:04 ` Radim Krčmář
2014-10-01 17:30 ` Nadav Amit
2014-10-01 18:27 ` Radim Krčmář
2014-10-01 19:16 ` Nadav Amit
2014-10-01 20:58 ` Radim Krčmář
2014-10-04 6:50 ` Gleb Natapov
2014-09-30 17:49 ` [PATCH 5/6] KVM: x86: Wrong assertion on paging_tmpl.h Nadav Amit
2014-10-01 16:26 ` Radim Krčmář
2014-10-01 17:14 ` Nadav Amit
2014-10-01 17:54 ` Radim Krčmář
2014-10-08 9:17 ` Paolo Bonzini
2014-09-30 17:49 ` [PATCH 6/6] KVM: x86: Emulator does not calculate address correctly Nadav Amit
2014-10-01 17:21 ` Radim Krčmář [this message]
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