From: Nikolay Borisov <nik.borisov@suse.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv5 0/4] x86/tdx: Adjust TD settings on boot
Date: Thu, 4 Jul 2024 13:17:12 +0300 [thread overview]
Message-ID: <499db0a3-186c-4998-a1c6-ce774a2d6c25@suse.com> (raw)
In-Reply-To: <20240624114149.377492-1-kirill.shutemov@linux.intel.com>
On 24.06.24 г. 14:41 ч., Kirill A. Shutemov wrote:
> The patchset adjusts a few TD settings on boot for the optimal functioning
> of the system:
>
> - Disable EPT violation #VE on private memory if TD can control it
>
> The newer TDX module allows the guest to control whether it wants to
> see #VE on EPT violation on private memory. The Linux kernel does not
> want such #VEs and needs to disable them.
>
> - Enable virtualization of topology-related CPUID leafs X2APIC_APICID MSR;
>
> The ENUM_TOPOLOGY feature allows the VMM to provide topology
> information to the guest. Enabling the feature eliminates
> topology-related #VEs: the TDX module virtualizes accesses to the
> CPUID leafs and the MSR.
>
> It allows TDX guest to run with non-trivial topology configuration.
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
prev parent reply other threads:[~2024-07-04 10:17 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-24 11:41 Kirill A. Shutemov
2024-06-24 11:41 ` [PATCHv5 1/4] x86/tdx: Introduce wrappers to read and write TD metadata Kirill A. Shutemov
2024-06-24 11:41 ` [PATCHv5 2/4] x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup() Kirill A. Shutemov
2024-06-24 11:41 ` [PATCHv5 3/4] x86/tdx: Dynamically disable SEPT violations from causing #VEs Kirill A. Shutemov
2024-07-03 11:39 ` Nikolay Borisov
2024-07-03 13:04 ` Kirill A. Shutemov
2024-07-03 14:49 ` Dave Hansen
2024-07-04 13:03 ` Kirill A. Shutemov
2024-07-03 12:22 ` Nikolay Borisov
2024-07-03 13:05 ` Kirill A. Shutemov
2024-06-24 11:41 ` [PATCHv5 4/4] x86/tdx: Enable CPU topology enumeration Kirill A. Shutemov
2024-07-02 16:17 ` Xiaoyao Li
2024-07-03 12:33 ` Kirill A. Shutemov
2024-07-04 10:17 ` Nikolay Borisov [this message]
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