Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by virtual address

From	Boris Ostrovsky <boris.ostrovsky@oracle.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by virtual address
Date	2016-12-19 19:20 +0100
Message-ID	<sQaHv-2WP-9@gated-at.bofh.it> (permalink)
References	<sQ8cF-1hT-7@gated-at.bofh.it> <sQ8cG-1hT-25@gated-at.bofh.it> <sQ8FH-1Hm-19@gated-at.bofh.it> <sQ9ip-1WS-5@gated-at.bofh.it> <sQaxP-2TJ-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On 12/19/2016 01:07 PM, Borislav Petkov wrote:
> On Mon, Dec 19, 2016 at 05:40:27PM +0100, Borislav Petkov wrote:
>> On Mon, Dec 19, 2016 at 11:10:29AM -0500, Boris Ostrovsky wrote:
>>> config attached. I'll see how I can get you the initrd.
>> Wait a bit, lemme see if I can repro with my initrd here.
> Hmm, it boots here (btw, this is with the 4 patches applied).
>
> [    0.000000] Linux version 4.9.0upstream-11409-gf3302378ed83-dirty (boris@pd) (gcc version 6.2.1 20161124 (Debian 6.2.1-5) ) #1 SMP Mon Dec 19 18:50:17 CET 2016
> [    0.000000] x86/fpu: Legacy x87 FPU detected.
> [    0.000000] e820: BIOS-provided physical RAM map:
> ...
> [    0.000000] RAMDISK: [mem 0x37845000-0x37c19fff]
> [    0.000000] Allocated new RAMDISK: [mem 0x36470000-0x36844f5e]
> [    0.000000] Move RAMDISK from [mem 0x37845000-0x37c19f5e] to [mem 0x36470000-0x36844f5e]
> ...
> [    0.243326] smpboot: CPU0: AMD E-350 Processor (family: 0x14, model: 0x1, stepping: 0x0)

IIUIC find_microcode_in_initrd() is called with paging on only on Intel
(which is where I observed it).


> [    0.243637] Performance Events: AMD PMU driver.
> ...
> [    1.307957] microcode: microcode updated early to new patch_level=0x05000029
> [    1.308212] microcode: CPU0: patch_level=0x05000029
> [    1.308374] microcode: CPU1: patch_level=0x05000029
> [    1.308726] microcode: Microcode Update Driver: v2.2.
>
> $ uname -a
> Linux x1 4.9.0upstream-11409-gf3302378ed83-dirty #1 SMP Mon Dec 19 18:50:17 CET 2016 i686 GNU/Linux
>
> So I guess I wanna take a look at the initrd now...


It'll have to wait until (my) evening, I'll ping you then.


-boris

Thread

Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-19 16:40 +0100
  Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-19 17:50 +0100
    Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-19 19:10 +0100
      Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-12-19 19:20 +0100
        Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-19 19:50 +0100
          Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-20 00:40 +0100
            Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-12-20 02:30 +0100
              Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-12-20 02:50 +0100
                Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-20 15:50 +0100
                Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-12-20 20:30 +0100
                Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-20 20:40 +0100
                Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-12-20 23:50 +0100
                Re: [PATCH] x86/microcode: Adjust ramdisk address when accessing by  virtual address Borislav Petkov <bp@alien8.de> - 2016-12-21 00:00 +0100
                [tip:x86/urgent] x86/microcode/AMD: Reload proper initrd start  address tip-bot for Borislav Petkov <tipbot@zytor.com> - 2016-12-21 11:00 +0100

csiph-web