linux-kernel - Re: [PATCH] KVM: x86/emulator: emulate movbe with operand-size prefix

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <170743804033.201213.17136091550631405731.b4-ty@google.com>
Date: Thu,  8 Feb 2024 16:22:43 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, kvm@...r.kernel.org, 
	Julian Stecklina <julian.stecklina@...erus-technology.de>
Cc: Thomas Prescher <thomas.prescher@...erus-technology.de>, 
	Paolo Bonzini <pbonzini@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, 
	Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: x86/emulator: emulate movbe with operand-size prefix

On Tue, 12 Dec 2023 10:59:37 +0100, Julian Stecklina wrote:
> The MOVBE instruction can come with an operand-size prefix (66h). In
> this, case the x86 emulation code returns EMULATION_FAILED.
> 
> It turns out that em_movbe can already handle this case and all that
> is missing is an entry in respective opcode tables to populate
> gprefix->pfx_66.
> 
> [...]

Applied to kvm-x86 misc, thanks!  I have a KUT testcase for this now, I'll post
it at some point.

[1/1] KVM: x86/emulator: emulate movbe with operand-size prefix
      https://github.com/kvm-x86/linux/commit/03f6298c7cf6

--
https://github.com/kvm-x86/linux/tree/next