From: Dave Hansen <dave.hansen@intel.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
luto@kernel.org, peterz@infradead.org
Cc: sathyanarayanan.kuppuswamy@linux.intel.com, ak@linux.intel.com,
dan.j.williams@intel.com, david@redhat.com, hpa@zytor.com,
seanjc@google.com, thomas.lendacky@amd.com,
elena.reshetova@intel.com, x86@kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] x86/tdx: Do not allow #VE due to EPT violation on the private memory
Date: Fri, 28 Oct 2022 08:41:59 -0700 [thread overview]
Message-ID: <1542cb57-7e3a-5881-a81c-031349ae8507@intel.com> (raw)
In-Reply-To: <20221028141220.29217-3-kirill.shutemov@linux.intel.com>
On 10/28/22 07:12, Kirill A. Shutemov wrote:
> arch/x86/coco/tdx/tdx.c | 49 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
The patch is good, but I'm not crazy about the changelog or the big ol'
comment.
Really, this would do:
/*
* The kernel can not handle #VE's when accessing normal kernel
* memory. Ensure that no #VE will be delivered for accesses to
* TD-private memory. Only VMM-shared memory (MMIO) will #VE.
*/
if (!(td_attr & ATTR_SEPT_VE_DISABLE))
panic("TD misconfiguration: SEPT_VE_DISABLE attibute must be set.\n");
I'll probably trim both of them down. If I chop out something that's
critical, let me know, otherwise let's follow up and stick all of those
details in Documentation.
next prev parent reply other threads:[~2022-10-28 15:42 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-28 14:12 [PATCH 0/2] x86/tdx: Enforce no #VE on private memory accesses Kirill A. Shutemov
2022-10-28 14:12 ` [PATCH 1/2] x86/tdx: Extract GET_INFO call from get_cc_mask() Kirill A. Shutemov
2022-10-28 15:43 ` Dave Hansen
2022-10-28 23:27 ` Dave Hansen
2022-10-28 23:59 ` Kirill A. Shutemov
2022-10-31 4:12 ` Kirill A. Shutemov
2022-10-31 16:42 ` Dave Hansen
2022-10-31 19:19 ` Kirill A. Shutemov
2022-10-31 19:27 ` Andi Kleen
2022-10-31 19:44 ` Dave Hansen
2022-10-31 22:10 ` Kirill A. Shutemov
2022-10-28 14:12 ` [PATCH 2/2] x86/tdx: Do not allow #VE due to EPT violation on the private memory Kirill A. Shutemov
2022-10-28 15:41 ` Dave Hansen [this message]
2022-10-31 4:07 ` Guorui Yu
2022-10-31 4:33 ` Kirill A. Shutemov
2022-10-31 14:22 ` Dave Hansen
2022-11-04 22:36 ` Erdem Aktas
2022-11-04 22:50 ` Dave Hansen
2022-11-07 22:53 ` Erdem Aktas
2022-11-07 23:30 ` Dave Hansen
2022-11-07 5:10 ` Guorui Yu
2022-11-07 13:31 ` Dave Hansen
2022-11-07 13:43 ` Guorui Yu
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