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  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:   Wed, 12 Aug 2020 15:04:44 +0200
From:   Paolo Bonzini <>
Cc:     Like Xu <>, Yao <>,
        Sean Christopherson <>,
        Vitaly Kuznetsov <>,
        Wanpeng Li <>,
        Jim Mattson <>,
        Joerg Roedel <>,,,
        Arnaldo Carvalho de Melo <>,
        Mark Rutland <>
Subject: Re: [PATCH] KVM: x86/pmu: Add '.exclude_hv = 1' for guest perf_event

On 12/08/20 14:56, Xu, Like wrote:
> My proposal is to define:
> the "hypervisor privilege levels" events in the KVM/x86 context as
> all the host kernel events plus /dev/kvm user space events.

What are "/dev/kvm user space events"?  In any case, this patch should
be included only in the series that adds exclude_hv support in arch/x86.


> If we add ".exclude_hv = 1" in the pmc_reprogram_counter(),
> do you see any side effect to cover the above usages?
> The fact that exclude_hv has never been used in x86 does help
> the generic perf code to handle permission checks in a more concise way.

Powered by blists - more mailing lists