From: "Kuppuswamy, Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
Juergen Gross <jgross@suse.com>, Deep Shah <sdeep@vmware.com>,
VMware Inc <pv-drivers@vmware.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Peter H Anvin <hpa@zytor.com>,
Dave Hansen <dave.hansen@intel.com>,
Tony Luck <tony.luck@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Andi Kleen <ak@linux.intel.com>,
Kirill Shutemov <kirill.shutemov@linux.intel.com>,
Sean Christopherson <seanjc@google.com>,
Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 08/12] x86/tdx: Add HLT support for TDX guest
Date: Fri, 24 Sep 2021 13:00:02 -0700 [thread overview]
Message-ID: <479fb072-5d98-53e8-5c12-e085f5e2bb18@linux.intel.com> (raw)
In-Reply-To: <5b728681-39e3-1399-2b01-53c950f9c6a5@linux.intel.com>
On 9/23/21 12:33 PM, Kuppuswamy, Sathyanarayanan wrote:
>> Is that explained in the comment in _tdx_halt() where irqs_disabled
>> tells the VMM what to do with the guest - to wake it up or to keep it in
>> virtual halt?
>
> I think it is left in halt state. Sean, any comment?
I inquired about it and found that the guest will be left in halt
state after non-safe halt call. It is mainly used in CPU off-lining
process.
--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer
next prev parent reply other threads:[~2021-09-24 20:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-16 18:35 [PATCH v7 00/12] Add TDX Guest Support (Initial support) Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 01/12] x86/tdx: Add Intel ARCH support to cc_platform_has() Kuppuswamy Sathyanarayanan
2021-09-16 18:44 ` Dave Hansen
2021-09-16 19:06 ` Borislav Petkov
2021-09-16 19:57 ` Dave Hansen
2021-09-17 16:57 ` Borislav Petkov
2021-09-28 11:11 ` Borislav Petkov
2021-09-16 18:35 ` [PATCH v7 02/12] x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 03/12] x86/tdx: Introduce INTEL_TDX_GUEST config option Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 04/12] x86/cpufeatures: Add TDX Guest CPU feature Kuppuswamy Sathyanarayanan
2021-09-23 10:02 ` Borislav Petkov
2021-09-23 14:10 ` Kuppuswamy, Sathyanarayanan
2021-09-23 14:16 ` Borislav Petkov
2021-09-23 14:20 ` Kuppuswamy, Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 05/12] x86/tdx: Add TDX guest support to intel_cc_platform_has() Kuppuswamy Sathyanarayanan
2021-09-23 10:36 ` Borislav Petkov
2021-09-23 14:10 ` Kuppuswamy, Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 06/12] x86/tdx: Add __tdx_module_call() and __tdx_hypercall() helper functions Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 07/12] x86/traps: Add #VE support for TDX guest Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 08/12] x86/tdx: Add HLT " Kuppuswamy Sathyanarayanan
2021-09-23 18:09 ` Borislav Petkov
2021-09-23 19:33 ` Kuppuswamy, Sathyanarayanan
2021-09-24 20:00 ` Kuppuswamy, Sathyanarayanan [this message]
2021-09-16 18:35 ` [PATCH v7 09/12] x86/tdx: Wire up KVM hypercalls Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 10/12] x86/tdx: Add MSR support for TDX guest Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 11/12] x86/tdx: Don't write CSTAR MSR on Intel Kuppuswamy Sathyanarayanan
2021-09-16 18:35 ` [PATCH v7 12/12] x86/tdx: Handle CPUID via #VE Kuppuswamy Sathyanarayanan
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