projects / pve-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 321d628a FG |
1 | From aa2a95a84f2cbd92b10887f3c99c7858fae9e7e4 Mon Sep 17 00:00:00 2001 |
| 2 | From: Tom Lendacky <thomas.lendacky@amd.com> | |
| 3 | Date: Mon, 17 Jul 2017 16:10:29 -0500 | |
| 633c5ed1 | 4 | Subject: [PATCH 021/242] xen/x86: Remove SME feature in PV guests |
| 321d628a FG |
5 | MIME-Version: 1.0 |
| 6 | Content-Type: text/plain; charset=UTF-8 | |
| 7 | Content-Transfer-Encoding: 8bit | |
| 8 | ||
| 9 | CVE-2017-5754 | |
| 10 | ||
| 11 | Xen does not currently support SME for PV guests. Clear the SME CPU | |
| 12 | capability in order to avoid any ambiguity. | |
| 13 | ||
| 14 | Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> | |
| 15 | Reviewed-by: Thomas Gleixner <tglx@linutronix.de> | |
| 16 | Reviewed-by: Borislav Petkov <bp@suse.de> | |
| 17 | Reviewed-by: Juergen Gross <jgross@suse.com> | |
| 18 | Cc: <xen-devel@lists.xen.org> | |
| 19 | Cc: Alexander Potapenko <glider@google.com> | |
| 20 | Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> | |
| 21 | Cc: Andy Lutomirski <luto@kernel.org> | |
| 22 | Cc: Arnd Bergmann <arnd@arndb.de> | |
| 23 | Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> | |
| 24 | Cc: Borislav Petkov <bp@alien8.de> | |
| 25 | Cc: Brijesh Singh <brijesh.singh@amd.com> | |
| 26 | Cc: Dave Young <dyoung@redhat.com> | |
| 27 | Cc: Dmitry Vyukov <dvyukov@google.com> | |
| 28 | Cc: Jonathan Corbet <corbet@lwn.net> | |
| 29 | Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | |
| 30 | Cc: Larry Woodman <lwoodman@redhat.com> | |
| 31 | Cc: Linus Torvalds <torvalds@linux-foundation.org> | |
| 32 | Cc: Matt Fleming <matt@codeblueprint.co.uk> | |
| 33 | Cc: Michael S. Tsirkin <mst@redhat.com> | |
| 34 | Cc: Paolo Bonzini <pbonzini@redhat.com> | |
| 35 | Cc: Peter Zijlstra <peterz@infradead.org> | |
| 36 | Cc: Radim Krčmář <rkrcmar@redhat.com> | |
| 37 | Cc: Rik van Riel <riel@redhat.com> | |
| 38 | Cc: Toshimitsu Kani <toshi.kani@hpe.com> | |
| 39 | Cc: kasan-dev@googlegroups.com | |
| 40 | Cc: kvm@vger.kernel.org | |
| 41 | Cc: linux-arch@vger.kernel.org | |
| 42 | Cc: linux-doc@vger.kernel.org | |
| 43 | Cc: linux-efi@vger.kernel.org | |
| 44 | Cc: linux-mm@kvack.org | |
| 45 | Link: http://lkml.kernel.org/r/3b605622a9fae5e588e5a13967120a18ec18071b.1500319216.git.thomas.lendacky@amd.com | |
| 46 | Signed-off-by: Ingo Molnar <mingo@kernel.org> | |
| 47 | (cherry picked from commit f2f931c6819467af5260a21c59fb787ce2863f92) | |
| 48 | Signed-off-by: Andy Whitcroft <apw@canonical.com> | |
| 49 | Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com> | |
| 50 | (cherry picked from commit 8370907399392a637a2e51b4db3368fb594db3a6) | |
| 51 | Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com> | |
| 52 | --- | |
| 53 | arch/x86/xen/enlighten_pv.c | 1 + | |
| 54 | 1 file changed, 1 insertion(+) | |
| 55 | ||
| 56 | diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c | |
| 57 | index 290bc5ac9852..df1921751aa5 100644 | |
| 58 | --- a/arch/x86/xen/enlighten_pv.c | |
| 59 | +++ b/arch/x86/xen/enlighten_pv.c | |
| 60 | @@ -263,6 +263,7 @@ static void __init xen_init_capabilities(void) | |
| 61 | setup_clear_cpu_cap(X86_FEATURE_MTRR); | |
| 62 | setup_clear_cpu_cap(X86_FEATURE_ACC); | |
| 63 | setup_clear_cpu_cap(X86_FEATURE_X2APIC); | |
| 64 | + setup_clear_cpu_cap(X86_FEATURE_SME); | |
| 65 | ||
| 66 | /* | |
| 67 | * Xen PV would need some work to support PCID: CR3 handling as well | |
| 68 | -- | |
| 69 | 2.14.2 | |
| 70 |