From: Sean Christopherson <seanjc@google.com>
To: Nicolas Saenz Julienne <nsaenz@amazon.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
pbonzini@redhat.com, vkuznets@redhat.com,
linux-doc@vger.kernel.org, linux-hyperv@vger.kernel.org,
linux-arch@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
graf@amazon.de, dwmw2@infradead.org, paul@amazon.com,
mlevitsk@redhat.com, jgowans@amazon.com, corbet@lwn.net,
decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
amoorthy@google.com
Subject: Re: [PATCH 11/18] KVM: x86: Pass the instruction length on memory fault user-space exits
Date: Fri, 13 Sep 2024 12:11:37 -0700 [thread overview]
Message-ID: <ZuSOaTw1vgwquqTE@google.com> (raw)
In-Reply-To: <20240609154945.55332-12-nsaenz@amazon.com>
On Sun, Jun 09, 2024, Nicolas Saenz Julienne wrote:
> In order to simplify Hyper-V VSM secure memory intercept generation in
> user-space (it avoids the need of implementing an x86 instruction
> decoder and the actual decoding). Pass the instruction length being run
> at the time of the guest exit as part of the memory fault exit
> information.
Why does userspace need the instruction length, but not the associated code stream?
next prev parent reply other threads:[~2024-09-13 19:11 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-09 15:49 [PATCH 00/18] Introducing Core Building Blocks for Hyper-V VSM Emulation Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 01/18] KVM: x86: hyper-v: Introduce XMM output support Nicolas Saenz Julienne
2024-07-08 14:59 ` Vitaly Kuznetsov
2024-07-17 14:12 ` Nicolas Saenz Julienne
2024-07-29 13:53 ` Vitaly Kuznetsov
2024-08-05 14:08 ` Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 02/18] KVM: x86: hyper-v: Introduce helpers to check if VSM is exposed to guest Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 03/18] hyperv-tlfs: Update struct hv_send_ipi{_ex}'s declarations Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 04/18] KVM: x86: hyper-v: Introduce VTL awareness to Hyper-V's PV-IPIs Nicolas Saenz Julienne
2024-09-13 18:02 ` Sean Christopherson
2024-09-16 14:52 ` Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 05/18] KVM: x86: hyper-v: Introduce MP_STATE_HV_INACTIVE_VTL Nicolas Saenz Julienne
2024-09-13 19:01 ` Sean Christopherson
2024-09-16 15:33 ` Nicolas Saenz Julienne
2024-09-18 7:56 ` Sean Christopherson
2024-06-09 15:49 ` [PATCH 06/18] KVM: x86: hyper-v: Exit on Get/SetVpRegisters hcall Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 07/18] KVM: x86: hyper-v: Exit on TranslateVirtualAddress hcall Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 08/18] KVM: x86: hyper-v: Exit on StartVirtualProcessor and GetVpIndexFromApicId hcalls Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 09/18] KVM: Define and communicate KVM_EXIT_MEMORY_FAULT RWX flags to userspace Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 10/18] KVM: x86: Keep track of instruction length during faults Nicolas Saenz Julienne
2024-09-13 19:10 ` Sean Christopherson
2024-06-09 15:49 ` [PATCH 11/18] KVM: x86: Pass the instruction length on memory fault user-space exits Nicolas Saenz Julienne
2024-09-13 19:11 ` Sean Christopherson [this message]
2024-09-16 15:53 ` Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 12/18] KVM: x86/mmu: Introduce infrastructure to handle non-executable mappings Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 13/18] KVM: x86/mmu: Avoid warning when installing non-private memory attributes Nicolas Saenz Julienne
2024-09-13 19:13 ` Sean Christopherson
2024-06-09 15:49 ` [PATCH 14/18] KVM: x86/mmu: Init memslot if memory attributes available Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 15/18] KVM: Introduce RWX memory attributes Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 16/18] KVM: x86: Take mem attributes into account when faulting memory Nicolas Saenz Julienne
2024-08-22 15:21 ` Nicolas Saenz Julienne
2024-08-22 16:58 ` Sean Christopherson
2024-09-13 18:26 ` Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 17/18] KVM: Introduce traces to track memory attributes modification Nicolas Saenz Julienne
2024-06-09 15:49 ` [PATCH 18/18] KVM: x86: hyper-v: Handle VSM hcalls in user-space Nicolas Saenz Julienne
2024-07-03 9:55 ` [PATCH 00/18] Introducing Core Building Blocks for Hyper-V VSM Emulation Nicolas Saenz Julienne
2024-07-03 12:48 ` Vitaly Kuznetsov
2024-07-03 13:18 ` Nicolas Saenz Julienne
2024-09-13 19:19 ` Sean Christopherson
2024-09-16 16:32 ` Nicolas Saenz Julienne
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZuSOaTw1vgwquqTE@google.com \
--to=seanjc@google.com \
--cc=amoorthy@google.com \
--cc=bp@alien8.de \
--cc=corbet@lwn.net \
--cc=dave.hansen@linux.intel.com \
--cc=decui@microsoft.com \
--cc=dwmw2@infradead.org \
--cc=graf@amazon.de \
--cc=jgowans@amazon.com \
--cc=kvm@vger.kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=mlevitsk@redhat.com \
--cc=nsaenz@amazon.com \
--cc=paul@amazon.com \
--cc=pbonzini@redhat.com \
--cc=tglx@linutronix.de \
--cc=vkuznets@redhat.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).