From: Zhi Wang <zhi.wang.linux@gmail.com>
To: Alexander Graf <graf@amazon.com>
Cc: Michael Roth <michael.roth@amd.com>, <kvm@vger.kernel.org>,
<linux-coco@lists.linux.dev>, <linux-mm@kvack.org>,
<linux-crypto@vger.kernel.org>, <x86@kernel.org>,
<linux-kernel@vger.kernel.org>, <tglx@linutronix.de>,
<mingo@redhat.com>, <jroedel@suse.de>, <thomas.lendacky@amd.com>,
<hpa@zytor.com>, <ardb@kernel.org>, <pbonzini@redhat.com>,
<seanjc@google.com>, <vkuznets@redhat.com>, <jmattson@google.com>,
<luto@kernel.org>, <dave.hansen@linux.intel.com>,
<slp@redhat.com>, <pgonda@google.com>, <peterz@infradead.org>,
<srinivas.pandruvada@linux.intel.com>, <rientjes@google.com>,
<dovmurik@linux.ibm.com>, <tobin@ibm.com>, <bp@alien8.de>,
<vbabka@suse.cz>, <kirill@shutemov.name>, <ak@linux.intel.com>,
<tony.luck@intel.com>, <marcorr@google.com>,
<sathyanarayanan.kuppuswamy@linux.intel.com>,
<alpergun@google.com>, <dgilbert@redhat.com>, <jarkko@kernel.org>,
<ashish.kalra@amd.com>, <nikunj.dadhania@amd.com>,
Brijesh Singh <brijesh.singh@amd.com>
Subject: Re: [PATCH RFC v8 47/56] KVM: SVM: Support SEV-SNP AP Creation NAE event
Date: Tue, 28 Feb 2023 22:47:30 +0200 [thread overview]
Message-ID: <20230228224730.00007d21@intel.com> (raw)
In-Reply-To: <09696af0-b72d-29e7-862b-22ae4a630299@amazon.com>
On Fri, 24 Feb 2023 13:37:48 +0100
Alexander Graf <graf@amazon.com> wrote:
>
> On 20.02.23 19:38, Michael Roth wrote:
> > From: Tom Lendacky <thomas.lendacky@amd.com>
> >
> > Add support for the SEV-SNP AP Creation NAE event. This allows SEV-SNP
> > guests to alter the register state of the APs on their own. This allows
> > the guest a way of simulating INIT-SIPI.
> >
> > A new event, KVM_REQ_UPDATE_PROTECTED_GUEST_STATE, is created and used
> > so as to avoid updating the VMSA pointer while the vCPU is running.
> >
> > For CREATE
> > The guest supplies the GPA of the VMSA to be used for the vCPU with
> > the specified APIC ID. The GPA is saved in the svm struct of the
> > target vCPU, the KVM_REQ_UPDATE_PROTECTED_GUEST_STATE event is added
> > to the vCPU and then the vCPU is kicked.
> >
> > For CREATE_ON_INIT:
> > The guest supplies the GPA of the VMSA to be used for the vCPU with
> > the specified APIC ID the next time an INIT is performed. The GPA is
> > saved in the svm struct of the target vCPU.
> >
> > For DESTROY:
> > The guest indicates it wishes to stop the vCPU. The GPA is cleared
> > from the svm struct, the KVM_REQ_UPDATE_PROTECTED_GUEST_STATE event is
> > added to vCPU and then the vCPU is kicked.
> >
> > The KVM_REQ_UPDATE_PROTECTED_GUEST_STATE event handler will be invoked
> > as a result of the event or as a result of an INIT. The handler sets the
> > vCPU to the KVM_MP_STATE_UNINITIALIZED state, so that any errors will
> > leave the vCPU as not runnable. Any previous VMSA pages that were
> > installed as part of an SEV-SNP AP Creation NAE event are un-pinned. If
> > a new VMSA is to be installed, the VMSA guest page is pinned and set as
> > the VMSA in the vCPU VMCB and the vCPU state is set to
> > KVM_MP_STATE_RUNNABLE. If a new VMSA is not to be installed, the VMSA is
> > cleared in the vCPU VMCB and the vCPU state is left as
> > KVM_MP_STATE_UNINITIALIZED to prevent it from being run.
> >
> > Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
> > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
> > Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
> > [mdr: add handling for restrictedmem]
> > Signed-off-by: Michael Roth <michael.roth@amd.com>
>
>
> What is the intended boot sequence for SEV-SNP guests? FWIW with this
> interface in place, guests will typically use in-guest VMSA pages to
> hold secondary vcpu state. But that means we're now allocating 4kb of
> memory for every vcpu that we create that will be for most of the
> guest's lifetime superfluous.
>
> Wouldn't it make more sense to have a model where we only allocate the
> VMSA for the boot CPU and leave secondary allocation to the guest? We
> already need firmware changes for SEV-SNP - may as well make this one more.
>
> [...]
>
> > +
> > +static int sev_snp_ap_creation(struct vcpu_svm *svm)
> > +{
> > + struct kvm_sev_info *sev = &to_kvm_svm(svm->vcpu.kvm)->sev_info;
> > + struct kvm_vcpu *vcpu = &svm->vcpu;
> > + struct kvm_vcpu *target_vcpu;
> > + struct vcpu_svm *target_svm;
> > + unsigned int request;
> > + unsigned int apic_id;
> > + bool kick;
> > + int ret;
> > +
> > + request = lower_32_bits(svm->vmcb->control.exit_info_1);
> > + apic_id = upper_32_bits(svm->vmcb->control.exit_info_1);
> > +
> > + /* Validate the APIC ID */
> > + target_vcpu = kvm_get_vcpu_by_id(vcpu->kvm, apic_id);
>
>
> Out of curiosity: The target CPU can be my own vCPU, right?
>
>
> > + if (!target_vcpu) {
> > + vcpu_unimpl(vcpu, "vmgexit: invalid AP APIC ID [%#x] from guest\n",
> > + apic_id);
> > + return -EINVAL;
> > + }
> > +
> > + ret = 0;
> > +
> > + target_svm = to_svm(target_vcpu);
> > +
> > + /*
> > + * The target vCPU is valid, so the vCPU will be kicked unless the
> > + * request is for CREATE_ON_INIT. For any errors at this stage, the
> > + * kick will place the vCPU in an non-runnable state.
> > + */
> > + kick = true;
> > +
> > + mutex_lock(&target_svm->sev_es.snp_vmsa_mutex);
> > +
> > + target_svm->sev_es.snp_vmsa_gpa = INVALID_PAGE;
> > + target_svm->sev_es.snp_ap_create = true;
> > +
> > + /* Interrupt injection mode shouldn't change for AP creation */
> > + if (request < SVM_VMGEXIT_AP_DESTROY) {
> > + u64 sev_features;
> > +
> > + sev_features = vcpu->arch.regs[VCPU_REGS_RAX];
> > + sev_features ^= sev->sev_features;
> > + if (sev_features & SVM_SEV_FEAT_INT_INJ_MODES) {
> > + vcpu_unimpl(vcpu, "vmgexit: invalid AP injection mode [%#lx] from guest\n",
> > + vcpu->arch.regs[VCPU_REGS_RAX]);
> > + ret = -EINVAL;
> > + goto out;
> > + }
> > + }
> > +
> > + switch (request) {
> > + case SVM_VMGEXIT_AP_CREATE_ON_INIT:
> > + kick = false;
> > + fallthrough;
> > + case SVM_VMGEXIT_AP_CREATE:
> > + if (!page_address_valid(vcpu, svm->vmcb->control.exit_info_2)) {
> > + vcpu_unimpl(vcpu, "vmgexit: invalid AP VMSA address [%#llx] from guest\n",
> > + svm->vmcb->control.exit_info_2);
> > + ret = -EINVAL;
> > + goto out;
> > + }
> > +
> > + /*
> > + * Malicious guest can RMPADJUST a large page into VMSA which
> > + * will hit the SNP erratum where the CPU will incorrectly signal
> > + * an RMP violation #PF if a hugepage collides with the RMP entry
> > + * of VMSA page, reject the AP CREATE request if VMSA address from
> > + * guest is 2M aligned.
>
>
> This will break genuine current Linux kernels that just happen to
> allocate a guest page, no? In fact, given enough vCPUs you're almost
> guaranteed to hit an aligned structure somewhere. What is the guest
> supposed to do in that situation?
>
>
> > + */
> > + if (IS_ALIGNED(svm->vmcb->control.exit_info_2, PMD_SIZE)) {
> > + vcpu_unimpl(vcpu,
> > + "vmgexit: AP VMSA address [%llx] from guest is unsafe as it is 2M aligned\n",
> > + svm->vmcb->control.exit_info_2);
> > + ret = -EINVAL;
> > + goto out;
> > + }
> > +
> > + target_svm->sev_es.snp_vmsa_gpa = svm->vmcb->control.exit_info_2;
> > + break;
> > + case SVM_VMGEXIT_AP_DESTROY:
>
>
> I don't understand the destroy path. Why does this case destroy anything?
>
>
> > + break;
> > + default:
> > + vcpu_unimpl(vcpu, "vmgexit: invalid AP creation request [%#x] from guest\n",
> > + request);
> > + ret = -EINVAL;
> > + break;
> > + }
> > +
> > +out:
> > + if (kick) {
> > + if (target_vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
> > + target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
>
>
> What if the guest AP goes through a create -> destroy -> create cycle?
> Will it stay runnable while destroyed?
The code is not very straightforward.
1) target_svm->sev_es.snp_vmsa_gpa is set as INVALID_PAGE in the beginning of this function.
2) If a DESTROY is hit in this function, target_svm->sev_es.snp_vmsa_gpa will be
left as INVALID_PAGE.
3) At the end of this function, it calls kvm_make_request(KVM_REQ_UPDATE_PROTECTED_GUEST_STATE).
4) In the vcpu_enter_guest(), the kvm_vcpu_reset()->sev_snp_init_protected_guest_state()
->__sev_snp_init_protected_guest_state() is called.
5) The mp_state is set to KVM_MP_STATE_STOPPED by default and the runtime VMSA is
cleared. Then the it will be initialized according to the guest's
configuration.
6) As the snp_vmsa_gpa is set as INVALID_PAGE in 1, the mp_state will be left as
KVM_MP_STATE_STOPPED.
7) With this code piece:
+ kvm_vcpu_reset(vcpu, true);
+ if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
+ goto out;
vcpu_enter_guest() bails out.
>
>
> Alex
>
> > +
> > + kvm_make_request(KVM_REQ_UPDATE_PROTECTED_GUEST_STATE, target_vcpu);
> > + kvm_vcpu_kick(target_vcpu);
> > + }
> > +
> > + mutex_unlock(&target_svm->sev_es.snp_vmsa_mutex);
> > +
> > + return ret;
> > +}
> > +
> > static int sev_handle_vmgexit_msr_protocol(struct vcpu_svm *svm)
> > {
> > struct vmcb_control_area *control = &svm->vmcb->control;
>
>
>
> Amazon Development Center Germany GmbH
> Krausenstr. 38
> 10117 Berlin
> Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
> Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
> Sitz: Berlin
> Ust-ID: DE 289 237 879
>
>
next prev parent reply other threads:[~2023-02-28 20:47 UTC|newest]
Thread overview: 147+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-20 18:37 [PATCH RFC v8 00/56] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support Michael Roth
2023-02-20 18:37 ` [PATCH RFC v8 01/56] KVM: x86: Add 'fault_is_private' x86 op Michael Roth
2023-03-01 10:25 ` Zhi Wang
2023-03-18 4:51 ` Isaku Yamahata
2023-03-20 17:46 ` Michael Roth
2023-03-18 4:53 ` Isaku Yamahata
2023-02-20 18:37 ` [PATCH RFC v8 02/56] KVM: x86: Add 'update_mem_attr' " Michael Roth
2023-03-18 4:56 ` Isaku Yamahata
2023-03-20 18:05 ` Michael Roth
2023-03-21 11:21 ` Zhi Wang
2023-03-22 1:58 ` Michael Roth
2023-03-23 18:17 ` Zhi Wang
2023-03-28 4:36 ` Michael Roth
2023-03-28 23:00 ` Zhi Wang
2023-03-29 23:50 ` Michael Roth
2023-02-20 18:37 ` [PATCH RFC v8 03/56] KVM: x86: Add platform hooks for private memory invalidations Michael Roth
2023-03-18 5:13 ` Isaku Yamahata
2023-03-20 18:09 ` Michael Roth
2023-02-20 18:37 ` [PATCH RFC v8 04/56] KVM: Add HVA range operator Michael Roth
2023-02-20 21:37 ` Zhi Wang
2023-03-27 0:34 ` Michael Roth
2023-04-04 14:40 ` Zhi Wang
2023-02-20 18:37 ` [PATCH RFC v8 05/56] KVM: SEV: Require KVM_PROTECTED_VM when AMD_MEM_ENCRYPT is enabled Michael Roth
2023-02-20 18:37 ` [PATCH RFC v8 06/56] KVM: Split out memory attribute xarray updates to helper function Michael Roth
2023-02-20 18:37 ` [PATCH RFC v8 07/56] KVM: SEV: Populate private memory fd during LAUNCH_UPDATE_DATA Michael Roth
2023-02-20 18:37 ` [PATCH RFC v8 08/56] KVM: SEV: Rename sev_{pin,unpin}_memory Michael Roth
2023-03-03 14:00 ` Vlastimil Babka
2023-03-06 11:01 ` Nikunj A. Dadhania
2023-02-20 18:38 ` [PATCH RFC v8 09/56] KVM: SEV: Handle memory backed by restricted memfd Michael Roth
2023-03-03 14:05 ` Vlastimil Babka
2023-03-06 11:03 ` Nikunj A. Dadhania
2023-02-20 18:38 ` [PATCH RFC v8 10/56] x86/cpufeatures: Add SEV-SNP CPU feature Michael Roth
2023-02-21 21:21 ` Sathyanarayanan Kuppuswamy
2023-02-22 23:27 ` Kalra, Ashish
2023-02-20 18:38 ` [PATCH RFC v8 11/56] x86/sev: Add the host SEV-SNP initialization support Michael Roth
2023-02-20 20:12 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 12/56] x86/sev: Add RMP entry lookup helpers Michael Roth
2023-03-03 15:28 ` Vlastimil Babka
2023-03-29 22:59 ` Michael Roth
2023-04-20 16:31 ` Vlastimil Babka
2023-02-20 18:38 ` [PATCH RFC v8 13/56] x86/fault: Add helper for dumping RMP entries Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 14/56] x86/sev: Add helper functions for RMPUPDATE and PSMASH instruction Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 15/56] x86/sev: Invalidate pages from the direct map when adding them to the RMP table Michael Roth
2023-03-01 12:07 ` Tom Dohrmann
2023-03-01 16:15 ` Dave Hansen
2023-03-28 22:12 ` Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 16/56] x86/traps: Define RMP violation #PF error code Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 17/56] x86/fault: Add support to handle the RMP fault for user address Michael Roth
2023-03-01 16:21 ` Dave Hansen
2023-03-28 23:31 ` Michael Roth
2023-04-11 18:27 ` Dave Hansen
2023-03-03 15:31 ` Vlastimil Babka
2023-02-20 18:38 ` [PATCH RFC v8 18/56] x86/fault: fix handle_split_page_fault() to work with memfd backed pages Michael Roth
2023-02-20 19:57 ` Hugh Dickins
2023-02-20 20:31 ` Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 19/56] x86/fault: Return pfn from dump_pagetable() for SEV-specific fault handling Michael Roth
2023-02-20 21:13 ` Zhi Wang
2023-02-28 10:53 ` Wu Zongyong
2023-02-20 18:38 ` [PATCH RFC v8 20/56] crypto:ccp: Define the SEV-SNP commands Michael Roth
2023-04-17 14:54 ` Sabin Rapan
2023-02-20 18:38 ` [PATCH RFC v8 21/56] crypto: ccp: Add support to initialize the AMD-SP for SEV-SNP Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 22/56] crypto:ccp: Provide API to issue SEV and SNP commands Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 23/56] crypto: ccp: Introduce snp leaked pages list Michael Roth
2023-03-03 15:54 ` Vlastimil Babka
2023-02-20 18:38 ` [PATCH RFC v8 24/56] crypto: ccp: Handle the legacy TMR allocation when SNP is enabled Michael Roth
2023-02-21 9:28 ` Zhi Wang
2023-02-21 15:31 ` Kalra, Ashish
2023-02-21 21:15 ` Zhi Wang
2023-02-21 22:06 ` Kalra, Ashish
2023-02-20 18:38 ` [PATCH RFC v8 25/56] crypto: ccp: Handle the legacy SEV command " Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 26/56] crypto: ccp: Add the SNP_PLATFORM_STATUS command Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 27/56] crypto: ccp: Add the SNP_{SET,GET}_EXT_CONFIG command Michael Roth
2023-02-22 12:32 ` Zhi Wang
2023-02-22 16:50 ` Tom Lendacky
2023-02-22 22:43 ` Kalra, Ashish
2023-02-23 6:38 ` Zhi Wang
2023-02-23 14:19 ` Tom Lendacky
2023-02-20 18:38 ` [PATCH RFC v8 28/56] crypto: ccp: Provide APIs to query extended attestation report Michael Roth
2023-02-22 20:24 ` Zhi Wang
2023-02-22 22:35 ` Kalra, Ashish
2023-02-23 8:14 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 29/56] KVM: SVM: Add support to handle AP reset MSR protocol Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 30/56] KVM: SVM: Provide the Hypervisor Feature support VMGEXIT Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 31/56] KVM: SVM: Make AVIC backing, VMSA and VMCB memory allocation SNP safe Michael Roth
2023-02-22 20:42 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 32/56] KVM: SVM: Add initial SEV-SNP support Michael Roth
2023-02-23 17:46 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 33/56] KVM: SVM: Add KVM_SNP_INIT command Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 34/56] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_START command Michael Roth
2023-02-23 21:41 ` Zhi Wang
2023-02-24 16:22 ` Tom Lendacky
2023-04-26 17:06 ` Sabin Rapan
2023-04-26 18:02 ` Tom Lendacky
2023-02-20 18:38 ` [PATCH RFC v8 35/56] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_UPDATE command Michael Roth
2023-02-24 11:55 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 36/56] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_FINISH command Michael Roth
2023-03-24 14:40 ` Alexander Graf
2023-02-20 18:38 ` [PATCH RFC v8 37/56] KVM: X86: Keep the NPT and RMP page level in sync Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 38/56] KVM: x86: Define RMP page fault error bits for #NPF Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 39/56] KVM: SVM: Add support to handle GHCB GPA register VMGEXIT Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 40/56] KVM: SVM: Add KVM_EXIT_VMGEXIT Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 41/56] KVM: SVM: Add support to handle MSR based Page State Change VMGEXIT Michael Roth
2023-02-24 15:06 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 42/56] KVM: SVM: Add support to handle " Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 43/56] KVM: x86: Export the kvm_zap_gfn_range() for the SNP use Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 44/56] KVM: SVM: Add support to handle the RMP nested page fault Michael Roth
2023-02-28 19:11 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 45/56] KVM: SVM: Provide support for SNP_GUEST_REQUEST NAE event Michael Roth
2023-02-24 11:01 ` Alexander Graf
2023-02-28 19:34 ` Zhi Wang
2023-04-17 13:05 ` Alexander Graf
2023-02-20 18:38 ` [PATCH RFC v8 46/56] KVM: SVM: Use a VMSA physical address variable for populating VMCB Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 47/56] KVM: SVM: Support SEV-SNP AP Creation NAE event Michael Roth
2023-02-24 12:37 ` Alexander Graf
2023-02-28 20:47 ` Zhi Wang [this message]
2023-03-01 21:14 ` Alexander Graf
2023-04-05 0:54 ` Michael Roth
2023-04-04 22:48 ` Michael Roth
2023-04-05 15:20 ` Tom Lendacky
2023-02-20 18:38 ` [PATCH RFC v8 48/56] KVM: SVM: Add SNP-specific handling for memory attribute updates Michael Roth
2023-03-01 23:37 ` Dave Hansen
2023-04-05 23:48 ` Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 49/56] KVM: SVM: Implement .fault_is_private callback for SNP Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 50/56] KVM: SEV: Handle restricted memory invalidations " Michael Roth
2023-03-01 10:41 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 51/56] KVM: SVM: Add module parameter to enable the SEV-SNP Michael Roth
2023-03-01 10:45 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 52/56] ccp: Add support to decrypt the page Michael Roth
2023-03-01 21:20 ` Zhi Wang
2023-03-02 5:59 ` Dov Murik
2023-03-02 14:33 ` Tom Lendacky
2023-03-02 21:11 ` Dov Murik
2023-02-20 18:38 ` [PATCH RFC v8 53/56] KVM: SVM: Make VMSAVE target area memory allocation SNP safe Michael Roth
2023-03-01 21:23 ` Zhi Wang
2023-02-20 18:38 ` [PATCH RFC v8 54/56] x86/sev: Add KVM commands for instance certs Michael Roth
2023-02-21 12:40 ` Dov Murik
2023-03-02 0:02 ` Zhi Wang
2023-03-02 1:41 ` Dionna Amalie Glaze
2023-03-02 11:27 ` Zhi Wang
2023-03-02 11:34 ` Dov Murik
2023-02-20 18:38 ` [PATCH RFC v8 55/56] x86/sev: Document KVM_SEV_SNP_{G,S}ET_CERTS Michael Roth
2023-02-20 18:38 ` [PATCH RFC v8 56/56] iommu/amd: Add IOMMU_SNP_SHUTDOWN support Michael Roth
2023-03-01 16:56 ` [PATCH RFC v8 00/56] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support Dave Hansen
2023-03-01 22:59 ` Zhi Wang
2023-03-01 23:39 ` Dave Hansen
2023-08-03 18:27 ` Schander, Johanna 'Mimoja' Amelie
2023-08-04 1:01 ` Kalra, Ashish
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