From: Dave Hansen <dave.hansen@intel.com>
To: "Michael Kelley (LINUX)" <mikelley@microsoft.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
"x86@kernel.org" <x86@kernel.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"bp@alien8.de" <bp@alien8.de>,
"dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
"hpa@zytor.com" <hpa@zytor.com>,
"luto@kernel.org" <luto@kernel.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"kirill.shutemov@linux.intel.com"
<kirill.shutemov@linux.intel.com>,
"elena.reshetova@intel.com" <elena.reshetova@intel.com>,
"isaku.yamahata@intel.com" <isaku.yamahata@intel.com>,
"seanjc@google.com" <seanjc@google.com>,
"thomas.lendacky@amd.com" <thomas.lendacky@amd.com>,
Dexuan Cui <decui@microsoft.com>,
"sathyanarayanan.kuppuswamy@linux.intel.com"
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>
Subject: Re: [PATCH 00/10] Handle set_memory_XXcrypted() errors
Date: Mon, 23 Oct 2023 09:57:34 -0700 [thread overview]
Message-ID: <1d9c03d9-9ec4-4b59-93ae-bf0a6c163217@intel.com> (raw)
In-Reply-To: <BYAPR21MB16883646AA820D5FD7EA2C1AD7D8A@BYAPR21MB1688.namprd21.prod.outlook.com>
On 10/23/23 09:47, Michael Kelley (LINUX) wrote:
> For paranoid CoCo VM users, using panic_on_warn=1 seems workable.
> However, with current code and this patch series, it's possible have
> set_memory_decrypted() return an error and have set_memory_encrypted()
> fix things up as best it can without generating any warnings. It seems
> like we need a WARN or some equivalent mechanism if either of these
> fails, so that CoCo VMs can panic if they don't want to run with any
> inconsistencies (again, assuming the host isn't malicious).
Adding a warning to the fixup path in set_memory_encrypted() would be
totally fine with me.
next prev parent reply other threads:[~2023-10-23 16:57 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-17 20:24 Rick Edgecombe
2023-10-17 20:24 ` [PATCH 01/10] mm: Add helper for freeing decrypted memory Rick Edgecombe
2023-10-17 20:24 ` [PATCH 02/10] x86/mm/cpa: Reject incorrect encryption change requests Rick Edgecombe
2023-10-18 8:44 ` Ingo Molnar
2023-10-18 15:53 ` Edgecombe, Rick P
2023-10-17 20:24 ` [PATCH 03/10] kvmclock: Use free_decrypted_pages() Rick Edgecombe
2023-10-18 5:20 ` Kuppuswamy Sathyanarayanan
2023-10-18 15:57 ` Edgecombe, Rick P
2023-10-17 20:24 ` [PATCH 04/10] swiotlb: " Rick Edgecombe
2023-10-18 4:43 ` Christoph Hellwig
2023-10-18 15:55 ` Edgecombe, Rick P
2023-10-31 10:43 ` Petr Tesařík
2023-10-31 15:54 ` Edgecombe, Rick P
2023-10-31 17:13 ` Petr Tesařík
2023-10-31 17:29 ` Edgecombe, Rick P
2023-11-01 6:27 ` Petr Tesařík
2023-11-01 14:40 ` Edgecombe, Rick P
2023-10-17 20:25 ` [PATCH 05/10] ptp: " Rick Edgecombe
2023-10-17 20:25 ` [PATCH 06/10] dma: " Rick Edgecombe
2023-10-18 6:24 ` Christoph Hellwig
2023-10-18 17:09 ` Edgecombe, Rick P
2023-10-18 17:42 ` Robin Murphy
2023-10-23 16:46 ` Edgecombe, Rick P
2023-10-23 17:22 ` Robin Murphy
2023-10-23 17:27 ` Edgecombe, Rick P
2023-10-17 20:25 ` [RFC 07/10] hv: " Rick Edgecombe
2023-10-17 20:25 ` [RFC 08/10] hv: Track decrypted status in vmbus_gpadl Rick Edgecombe
2023-10-17 20:25 ` [RFC 09/10] hv_nstvsc: Don't free decrypted memory Rick Edgecombe
2023-10-17 20:25 ` [RFC 10/10] uio_hv_generic: " Rick Edgecombe
2023-10-19 17:05 ` [PATCH 00/10] Handle set_memory_XXcrypted() errors Michael Kelley (LINUX)
2023-10-19 19:13 ` Dave Hansen
2023-10-23 16:47 ` Michael Kelley (LINUX)
2023-10-23 16:57 ` Dave Hansen [this message]
2023-10-23 17:01 ` Edgecombe, Rick P
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