From: Sean Christopherson <seanjc@google.com>
To: Florian Schmidt <flosch@nutanix.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Thomas Gleixner <tglx@kernel.org>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
kvm@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH] kvm: add EVER_MAPPED ioctl and capability
Date: Fri, 31 Jul 2026 05:54:59 -0700 [thread overview]
Message-ID: <amybI9Fe4R_9OFAc@google.com> (raw)
In-Reply-To: <20260731091708.2963414-1-flosch@nutanix.com>
On Fri, Jul 31, 2026, Florian Schmidt wrote:
> This allows a VMM to keep track of which pages were mapped by the guest
> at any point.
So does userfaultfd. Any performance concerns with UFFD should be addressed by
KVM Userfault, which is on my todo list for this year.
[*] https://lore.kernel.org/all/20250109204929.1106563-1-jthoughton@google.com
prev parent reply other threads:[~2026-07-31 12:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-31 9:17 [PATCH] kvm: add EVER_MAPPED ioctl and capability Florian Schmidt
2026-07-31 9:32 ` sashiko-bot
2026-07-31 12:54 ` Sean Christopherson [this message]
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