From: Borislav Petkov <bp@alien8.de>
To: Brian Gerst <brgerst@gmail.com>
Cc: Baoquan He <bhe@redhat.com>, Yinghai Lu <yinghai@kernel.org>,
Juergen Gross <jgross@suse.com>,
Thomas Garnier <thgarnie@google.com>,
Andy Lutomirski <luto@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Alexander Kuleshov <kuleshovmail@gmail.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
borntraeger@de.ibm.com, sds@tycho.nsa.gov,
kirill.shutemov@linux.intel.com, jroedel@suse.de,
Kees Cook <keescook@chromium.org>,
"Williams, Dan J" <dan.j.williams@intel.com>,
Mark Salter <msalter@redhat.com>, Borislav Petkov <bp@suse.de>,
Jonathan Corbet <corbet@lwn.net>,
matt@codeblueprint.co.uk, guangrong.xiao@linux.intel.com,
aneesh.kumar@linux.vnet.ibm.com, Ingo Molnar <mingo@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
toshi.kani@hpe.com, alpopov@ptsecurity.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Jan Beulich <JBeulich@suse.com>,
Andrew Morton <akpm@linux-foundation.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Denys Vlasenko <dvlasenk@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
dyoung@redhat.com, Thomas Gleixner <tglx@linutronix.de>,
Dmitry Vyukov <dvyukov@google.com>,
lv.zheng@intel.com, schwidefsky@de.ibm.com,
linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/boot] x86/mm: Enable KASLR for physical mapping memory regions
Date: Tue, 16 Aug 2016 15:49:28 +0200 [thread overview]
Message-ID: <20160816134928.GC11106@nazgul.tnic> (raw)
In-Reply-To: <20160816134205.GB11106@nazgul.tnic>
On Tue, Aug 16, 2016 at 03:42:05PM +0200, Borislav Petkov wrote:
> I'll try to reproduce and fix this at some point but am away currently
> so don't hold your breath. Does "dis_ucode_ldr" on the kernel cmdline
> get you any further?
Just a stab in the dark: does something like that help?
---
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 27a0228c9cae..2debaf119baf 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -434,6 +434,10 @@ int __init save_microcode_in_initrd_amd(void)
else
container = cont_va;
+#ifdef CONFIG_RANDOMIZE_MEMORY
+ container += PAGE_OFFSET - __PAGE_OFFSET_BASE;
+#endif
+
eax = cpuid_eax(0x00000001);
eax = ((eax >> 8) & 0xf) + ((eax >> 20) & 0xff);
---
Thanks.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2016-08-16 13:49 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-22 0:46 [PATCH v7 0/9] x86/mm: memory area address KASLR Kees Cook
2016-06-22 0:46 ` [PATCH v7 1/9] x86/mm: Refactor KASLR entropy functions Kees Cook
2016-07-08 20:33 ` [tip:x86/boot] " tip-bot for Thomas Garnier
2016-06-22 0:46 ` [PATCH v7 2/9] x86/mm: Update physical mapping variable names (x86_64) Kees Cook
2016-07-08 20:34 ` [tip:x86/boot] x86/mm: Update physical mapping variable names tip-bot for Thomas Garnier
2016-06-22 0:47 ` [PATCH v7 3/9] x86/mm: PUD VA support for physical mapping (x86_64) Kees Cook
2016-07-08 20:34 ` [tip:x86/boot] x86/mm: Add PUD VA support for physical mapping tip-bot for Thomas Garnier
2016-06-22 0:47 ` [PATCH v7 4/9] x86/mm: Separate variable for trampoline PGD (x86_64) Kees Cook
2016-07-08 20:35 ` [tip:x86/boot] x86/mm: Separate variable for trampoline PGD tip-bot for Thomas Garnier
2016-06-22 0:47 ` [PATCH v7 5/9] x86/mm: Implement ASLR for kernel memory regions (x86_64) Kees Cook
2016-07-08 20:35 ` [tip:x86/boot] x86/mm: Implement ASLR for kernel memory regions tip-bot for Thomas Garnier
2016-06-22 0:47 ` [PATCH v7 6/9] x86/mm: Enable KASLR for physical mapping memory region (x86_64) Kees Cook
2016-07-08 20:35 ` [tip:x86/boot] x86/mm: Enable KASLR for physical mapping memory regions tip-bot for Thomas Garnier
2016-08-14 4:25 ` Brian Gerst
2016-08-14 23:26 ` Baoquan He
2016-08-16 11:31 ` Brian Gerst
2016-08-16 13:42 ` Borislav Petkov
2016-08-16 13:49 ` Borislav Petkov [this message]
2016-08-16 15:54 ` Borislav Petkov
2016-08-16 17:50 ` Borislav Petkov
2016-08-16 19:49 ` Kees Cook
2016-08-16 21:01 ` Borislav Petkov
2016-08-17 0:31 ` Brian Gerst
2016-08-17 9:11 ` Borislav Petkov
2016-08-17 10:19 ` Ingo Molnar
2016-08-17 11:33 ` Borislav Petkov
2016-08-18 10:49 ` [tip:x86/urgent] x86/microcode/AMD: Fix initrd loading with CONFIG_RANDOMIZE_MEMORY=y tip-bot for Borislav Petkov
2016-06-22 0:47 ` [PATCH v7 7/9] x86/mm: Enable KASLR for vmalloc memory region (x86_64) Kees Cook
2016-07-08 20:36 ` [tip:x86/boot] x86/mm: Enable KASLR for vmalloc memory regions tip-bot for Thomas Garnier
2016-06-22 0:47 ` [PATCH v7 8/9] x86/mm: Enable KASLR for vmemmap memory region (x86_64) Kees Cook
2016-06-22 0:47 ` [PATCH v7 9/9] x86/mm: Memory hotplug support for KASLR memory randomization (x86_64) Kees Cook
2016-07-08 20:36 ` [tip:x86/boot] x86/mm: Add memory hotplug support for KASLR memory randomization tip-bot for Thomas Garnier
2016-06-22 12:47 ` [kernel-hardening] [PATCH v7 0/9] x86/mm: memory area address KASLR Jason Cooper
2016-06-22 15:59 ` Thomas Garnier
2016-06-22 17:05 ` Kees Cook
2016-06-23 19:33 ` Jason Cooper
2016-06-23 19:45 ` Sandy Harris
2016-06-23 19:59 ` Kees Cook
2016-06-23 20:19 ` Jason Cooper
2016-06-23 20:16 ` Jason Cooper
2016-06-23 19:58 ` Kees Cook
2016-06-23 20:05 ` Ard Biesheuvel
2016-06-24 1:11 ` Jason Cooper
2016-06-24 10:54 ` Ard Biesheuvel
2016-06-24 16:02 ` devicetree random-seed properties, was: "Re: [PATCH v7 0/9] x86/mm: memory area address KASLR" Jason Cooper
2016-06-24 19:04 ` Kees Cook
2016-06-24 20:40 ` Andy Lutomirski
2016-06-30 21:48 ` Jason Cooper
2016-06-30 21:48 ` Jason Cooper
2016-07-07 22:24 ` [PATCH v7 0/9] x86/mm: memory area address KASLR Kees Cook
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