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From: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
To: Tom Lendacky <thomas.lendacky-5C7GfCeVMHo@public.gmane.org>
Cc: linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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	"Radim Krčmář" <rkrcmar-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	"Matt Fleming"
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	linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	"Alexander Potapenko"
	<glider-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
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	kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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	"Andy Lutomirski" <luto-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
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	"Dmitry Vyukov" <dvyukov-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
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	"Michael S. Tsirkin"
	<mst-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	"Paolo Bonzini"
	<pbonzini-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [RFC PATCH v4 06/28] x86: Add support to enable SME during early boot processing
Date: Tue, 21 Feb 2017 16:10:39 +0100	[thread overview]
Message-ID: <20170221151039.nheny3gazbnwaidp@pd.tnic> (raw)
In-Reply-To: <a23be4fa-d7ef-4e7a-5b6b-73e120a5ca80-5C7GfCeVMHo@public.gmane.org>

On Tue, Feb 21, 2017 at 08:55:30AM -0600, Tom Lendacky wrote:
> Actually, %rbp will have the encryption bit set in it at the time of the
> check so if SME is active we won't take the jump to .Lskip_fixup.

Ha, I didn't think of that! Do you see now what I mean with being
explicit in the asm boot code? :-)

Please note that in the comment above sme_encrypt_kernel().

Thanks.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

  parent reply	other threads:[~2017-02-21 15:10 UTC|newest]

Thread overview: 111+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-16 15:41 [RFC PATCH v4 00/28] x86: Secure Memory Encryption (AMD) Tom Lendacky
2017-02-16 15:42 ` [RFC PATCH v4 01/28] x86: Documentation for AMD Secure Memory Encryption (SME) Tom Lendacky
     [not found]   ` <20170216154211.19244.76656.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-16 17:56     ` Borislav Petkov
2017-02-16 19:48       ` Tom Lendacky
2017-02-16 15:42 ` [RFC PATCH v4 02/28] x86: Set the write-protect cache mode for full PAT support Tom Lendacky
     [not found]   ` <20170216154225.19244.96438.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-17 11:07     ` Borislav Petkov
2017-02-17 15:56       ` Tom Lendacky
2017-02-16 15:42 ` [RFC PATCH v4 03/28] x86: Add the Secure Memory Encryption CPU feature Tom Lendacky
     [not found]   ` <20170216154236.19244.7580.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-16 18:13     ` Borislav Petkov
2017-02-16 19:42       ` Tom Lendacky
     [not found]         ` <a1a6a6d7-3aac-3138-1e75-6160f0427a6b-5C7GfCeVMHo@public.gmane.org>
2017-02-16 20:06           ` Borislav Petkov
2017-02-16 15:42 ` [RFC PATCH v4 04/28] x86: Handle reduction in physical address size with SME Tom Lendacky
2017-02-17 11:04   ` Borislav Petkov
2017-02-16 15:43 ` [RFC PATCH v4 05/28] x86: Add Secure Memory Encryption (SME) support Tom Lendacky
2017-02-17 12:00   ` Borislav Petkov
2017-02-25 15:29   ` Borislav Petkov
2017-02-28 23:01     ` Tom Lendacky
2017-02-16 15:43 ` [RFC PATCH v4 06/28] x86: Add support to enable SME during early boot processing Tom Lendacky
     [not found]   ` <20170216154319.19244.7863.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-20 12:51     ` Borislav Petkov
2017-02-21 14:55       ` Tom Lendacky
     [not found]         ` <a23be4fa-d7ef-4e7a-5b6b-73e120a5ca80-5C7GfCeVMHo@public.gmane.org>
2017-02-21 15:10           ` Borislav Petkov [this message]
2017-02-16 15:43 ` [RFC PATCH v4 07/28] x86: Provide general kernel support for memory encryption Tom Lendacky
     [not found]   ` <20170216154332.19244.55451.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-20 15:21     ` Borislav Petkov
2017-02-21 17:18       ` Tom Lendacky
2017-02-22 12:08         ` Borislav Petkov
2017-02-20 18:38   ` Borislav Petkov
2017-02-22 16:43     ` Tom Lendacky
2017-02-22 18:13   ` Dave Hansen
2017-02-23 23:12     ` Tom Lendacky
2017-02-22 18:13   ` Dave Hansen
2017-02-16 15:43 ` [RFC PATCH v4 08/28] x86: Extend the early_memremap support with additional attrs Tom Lendacky
     [not found]   ` <20170216154348.19244.11884.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-20 15:43     ` Borislav Petkov
2017-02-22 15:42       ` Tom Lendacky
2017-02-16 15:43 ` [RFC PATCH v4 09/28] x86: Add support for early encryption/decryption of memory Tom Lendacky
     [not found]   ` <20170216154358.19244.6082.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-20 18:22     ` Borislav Petkov
2017-02-22 15:48       ` Tom Lendacky
2017-02-16 15:44 ` [RFC PATCH v4 10/28] x86: Insure that boot memory areas are mapped properly Tom Lendacky
     [not found]   ` <20170216154411.19244.99258.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-20 19:45     ` Borislav Petkov
2017-02-22 18:34       ` Tom Lendacky
2017-02-16 15:44 ` [RFC PATCH v4 11/28] x86: Add support to determine the E820 type of an address Tom Lendacky
     [not found]   ` <20170216154430.19244.95519.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-20 20:09     ` Borislav Petkov
2017-02-28 22:34       ` Tom Lendacky
2017-03-03  9:52         ` Borislav Petkov
2017-02-16 15:44 ` [RFC PATCH v4 12/28] efi: Add an EFI table address match function Tom Lendacky
2017-02-16 15:44 ` [RFC PATCH v4 13/28] efi: Update efi_mem_type() to return defined EFI mem types Tom Lendacky
2017-02-21 12:05   ` Matt Fleming
2017-02-23 17:27     ` Tom Lendacky
2017-02-24  9:57       ` Matt Fleming
2017-02-16 15:45 ` [RFC PATCH v4 14/28] Add support to access boot related data in the clear Tom Lendacky
     [not found]   ` <20170216154508.19244.58580.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-21 15:06     ` Borislav Petkov
2017-02-23 21:34       ` Tom Lendacky
2017-02-24 10:21         ` Borislav Petkov
2017-02-24 15:04           ` Tom Lendacky
2017-02-24 15:22             ` Borislav Petkov
2017-03-08  6:55   ` Dave Young
2017-03-17 19:50     ` Tom Lendacky
2017-02-16 15:45 ` [RFC PATCH v4 15/28] Add support to access persistent memory " Tom Lendacky
2017-03-17 22:58   ` Elliott, Robert (Persistent Memory)
2017-03-23 21:02     ` Tom Lendacky
2017-02-16 15:45 ` [RFC PATCH v4 16/28] x86: Add support for changing memory encryption attribute Tom Lendacky
2017-02-22 18:52   ` Borislav Petkov
2017-02-28 22:46     ` Tom Lendacky
2017-02-16 15:45 ` [RFC PATCH v4 17/28] x86: Decrypt trampoline area if memory encryption is active Tom Lendacky
2017-02-16 15:46 ` [RFC PATCH v4 18/28] x86: DMA support for memory encryption Tom Lendacky
2017-02-25 17:10   ` Borislav Petkov
2017-03-06 17:47     ` Tom Lendacky
2017-02-16 15:46 ` [RFC PATCH v4 19/28] swiotlb: Add warnings for use of bounce buffers with SME Tom Lendacky
2017-02-17 15:59   ` Konrad Rzeszutek Wilk
2017-02-17 16:51     ` Tom Lendacky
2017-03-02 17:01       ` Paolo Bonzini
2017-02-27 17:52   ` Borislav Petkov
2017-02-28 23:19     ` Tom Lendacky
2017-03-01 11:17       ` Borislav Petkov
2017-02-16 15:46 ` [RFC PATCH v4 20/28] iommu/amd: Disable AMD IOMMU if memory encryption is active Tom Lendacky
2017-02-16 15:46 ` [RFC PATCH v4 21/28] x86: Check for memory encryption on the APs Tom Lendacky
     [not found]   ` <20170216154647.19244.18733.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-27 18:17     ` Borislav Petkov
2017-02-28 23:28       ` Tom Lendacky
     [not found]         ` <5f461d57-9232-1cb3-d4d9-9b8a39d00b12-5C7GfCeVMHo@public.gmane.org>
2017-03-01 11:17           ` Borislav Petkov
2017-02-16 15:47 ` [RFC PATCH v4 22/28] x86: Do not specify encrypted memory for video mappings Tom Lendacky
2017-02-16 15:47 ` [RFC PATCH v4 23/28] x86/kvm: Enable Secure Memory Encryption of nested page tables Tom Lendacky
2017-02-16 15:47 ` [RFC PATCH v4 24/28] x86: Access the setup data through debugfs decrypted Tom Lendacky
2017-03-08  7:04   ` Dave Young
2017-03-17 19:54     ` Tom Lendacky
2017-02-16 15:47 ` [RFC PATCH v4 25/28] x86: Access the setup data through sysfs decrypted Tom Lendacky
2017-03-08  7:09   ` Dave Young
2017-03-17 20:09     ` Tom Lendacky
2017-02-16 15:47 ` [RFC PATCH v4 26/28] x86: Allow kexec to be used with SME Tom Lendacky
2017-02-17 15:57   ` Konrad Rzeszutek Wilk
2017-02-17 16:43     ` Tom Lendacky
2017-03-01  9:25       ` Dave Young
2017-03-01  9:27         ` Dave Young
2017-03-06 17:58         ` Tom Lendacky
2017-03-06 18:04           ` Tom Lendacky
2017-03-08  8:12           ` Dave Young
2017-02-28 10:35   ` Borislav Petkov
2017-03-01 15:36     ` Tom Lendacky
2017-02-16 15:48 ` [RFC PATCH v4 27/28] x86: Add support to encrypt the kernel in-place Tom Lendacky
     [not found]   ` <20170216154808.19244.475.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-03-01 17:36     ` Borislav Petkov
2017-03-02 18:30       ` Tom Lendacky
2017-03-02 18:51         ` Borislav Petkov
2017-02-16 15:48 ` [RFC PATCH v4 28/28] x86: Add support to make use of Secure Memory Encryption Tom Lendacky
2017-03-01 18:40   ` Borislav Petkov
2017-03-07 16:05     ` Tom Lendacky
2017-03-07 17:42       ` Borislav Petkov
2017-03-08 15:05       ` Borislav Petkov
     [not found] ` <20170216154158.19244.66630.stgit-qCXWGYdRb2BnqfbPTmsdiZQ+2ll4COg0XqFh9Ls21Oc@public.gmane.org>
2017-02-18 18:12   ` [RFC PATCH v4 00/28] x86: Secure Memory Encryption (AMD) Borislav Petkov
2017-02-21 15:09     ` Tom Lendacky
2017-02-21 17:42     ` Rik van Riel
     [not found]       ` <1487698965.17158.8.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-02-21 17:53         ` Borislav Petkov
2017-03-01  9:17 ` Dave Young
2017-03-01 17:51   ` Tom Lendacky

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