linux-kernel - Re: [PATCH 16/17] KVM: retpolines: x86: eliminate retpoline from svm.c exit handlers

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Mon, 23 Sep 2019 12:01:12 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Andrea Arcangeli <aarcange@...hat.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        "Dr. David Alan Gilbert" <dgilbert@...hat.com>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Peter Xu <peterx@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 16/17] KVM: retpolines: x86: eliminate retpoline from
 svm.c exit handlers

On 20/09/19 23:25, Andrea Arcangeli wrote:
> +#ifdef CONFIG_RETPOLINE
> +	if (exit_code == SVM_EXIT_MSR)
> +		return msr_interception(svm);
> +	else if (exit_code == SVM_EXIT_VINTR)
> +		return interrupt_window_interception(svm);
> +	else if (exit_code == SVM_EXIT_INTR)
> +		return intr_interception(svm);
> +	else if (exit_code == SVM_EXIT_HLT)
> +		return halt_interception(svm);
> +	else if (exit_code == SVM_EXIT_NPF)
> +		return npf_interception(svm);
> +	else if (exit_code == SVM_EXIT_CPUID)
> +		return cpuid_interception(svm);
> +#endif

Same here; msr_interception and npf_interception are the main ones we
care about, plus io_interception which isn't listed probably because it
depends on the virtual hardware.

Paolo