From: Dave Hansen <dave.hansen@linux.intel.com>
To: Tom Lendacky <thomas.lendacky@amd.com>, linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, aarcange@redhat.com, luto@kernel.org,
torvalds@linux-foundation.org, keescook@google.com,
hughd@google.com, jgross@suse.com, x86@kernel.org,
namit@vmware.com
Subject: Re: [PATCH 00/11] [v5] Use global pages with PTI
Date: Mon, 9 Apr 2018 12:50:20 -0700 [thread overview]
Message-ID: <f87b6f47-2416-4c12-55dd-5f0cb86f1464@linux.intel.com> (raw)
In-Reply-To: <1b45ffd1-99bb-4ac1-fb65-0de3e42c1c0a@amd.com>
On 04/09/2018 11:59 AM, Tom Lendacky wrote:
> On 4/9/2018 1:17 PM, Dave Hansen wrote:
>> On 04/09/2018 11:04 AM, Tom Lendacky wrote:
>>> On 4/6/2018 3:55 PM, Dave Hansen wrote:
>>>> Changes from v4
>>>> * Fix compile error reported by Tom Lendacky
>>> This built with CONFIG_RANDOMIZE_BASE=y, but failed to boot successfully.
>>> I think you're missing the initialization of __default_kernel_pte_mask in
>>> kaslr.c.
>>
>> This should be simple to fix (just add a -1 instead of 0), but let me
>> double-check and actually boot the fix.
>
> Yup, added an "= ~0" and everything is good.
I'm testing at this commit in the tip tree:
0564258... x86/pti: Leave kernel text global for !PCID
It seems to boot OK with RANDOMIZE_BASE=y for both PCID and non-PCID
configuration. Could you send along your .config so I can try to reproduce?
next prev parent reply other threads:[~2018-04-09 19:50 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-06 20:55 Dave Hansen
2018-04-06 20:55 ` [PATCH 01/11] x86/mm: factor out pageattr _PAGE_GLOBAL setting Dave Hansen
2018-04-06 20:55 ` [PATCH 02/11] x86/mm: undo double _PAGE_PSE clearing Dave Hansen
2018-04-06 20:55 ` [PATCH 03/11] x86/mm: introduce "default" kernel PTE mask Dave Hansen
2018-04-06 20:55 ` [PATCH 04/11] x86/espfix: document use of _PAGE_GLOBAL Dave Hansen
2018-04-06 20:55 ` [PATCH 05/11] x86/mm: do not auto-massage page protections Dave Hansen
2018-04-06 20:55 ` [PATCH 06/11] x86/mm: remove extra filtering in pageattr code Dave Hansen
2018-04-06 20:55 ` [PATCH 07/11] x86/mm: comment _PAGE_GLOBAL mystery Dave Hansen
2018-04-06 20:55 ` [PATCH 08/11] x86/mm: do not forbid _PAGE_RW before init for __ro_after_init Dave Hansen
2018-04-06 20:55 ` [PATCH 09/11] x86/pti: enable global pages for shared areas Dave Hansen
2018-04-06 20:55 ` [PATCH 10/11] x86/pti: never implicitly clear _PAGE_GLOBAL for kernel image Dave Hansen
2018-04-06 20:55 ` [PATCH 11/11] x86/pti: leave kernel text global for !PCID Dave Hansen
2018-04-19 0:11 ` Kees Cook
2018-04-19 16:02 ` Dave Hansen
2018-04-19 16:55 ` Kees Cook
2018-04-09 18:04 ` [PATCH 00/11] [v5] Use global pages with PTI Tom Lendacky
2018-04-09 18:17 ` Dave Hansen
2018-04-09 18:59 ` Tom Lendacky
2018-04-09 19:50 ` Dave Hansen [this message]
2018-04-09 20:48 ` Tom Lendacky
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