On 11/15/2012 06:01 PM, Gene Heskett wrote:
On Thursday 15 November 2012, Henrique de Moraes Holschuh wrote:
On Thu, 15 Nov 2012, Boris Ostrovsky wrote:
Add valid patch size for family 16h processors

Signed-off-by: Boris Ostrovsky <boris.ostrov...@amd.com>

Is this something that needs to go to -stable ?

IMO, and if I had an oar in this water, yes.  Its been missing since the
Intel folks started playing with it a couple years back up the log.  I
have the amd_ucode files in my /lib/firmware tree,

root@coyote:/opt/os9# ls -l /lib/firmware/amd-ucode/
total 76
-rw-r--r-- 1 root root   642 2012-01-17 11:50 INSTALL
-rw-r--r-- 1 root root  9987 2012-01-17 11:50 LICENSE
-rw-r--r-- 1 root root 12404 2012-01-17 11:50 microcode_amd.bin
-rw-r--r-- 1 root root  1526 2012-01-17 11:50 microcode_amd.bin.README
-rw-r--r-- 1 root root  2644 2012-01-17 11:50 microcode_amd_fam15h.bin
-rw-r--r-- 1 root root   510 2012-01-17 11:50
microcode_amd_fam15h.bin.README
-rw-r--r-- 1 root root  2012 2009-01-20 04:48 microcode_amd.phenom-V83
-rw-r--r-- 1 root root 15020 2012-01-17 11:50 microcode_amd_solaris.bin
-rw-r--r-- 1 root root  1685 2012-01-17 11:50
microcode_amd_solaris.bin.README
-rw-r--r-- 1 root root  6227 2012-01-17 11:50 README

but I can't recall the last time I saw the code sign in during dmesg.
Old, slow 4 core phenom here.  AMD was forgotten about when the loading
of it was moved from the kernel options to /etc/init.d/microcode.  For
an AMD user, that was not a show stopper, but it wasn't a Good Thing(TM)
either.

One possibility is that BIOS already incorporated all patches (which typically is the case) and so the driver doesn't have to do anything.

-boris




  #define F1XH_MPB_MAX_SIZE 2048
  #define F14H_MPB_MAX_SIZE 1824
  #define F15H_MPB_MAX_SIZE 4096

+#define F16H_MPB_MAX_SIZE 3458

        switch (c->x86) {

        case 0x14:
@@ -198,6 +199,9 @@ static unsigned int verify_patch_size(int cpu, u32
patch_size,

        case 0x15:
                max_size = F15H_MPB_MAX_SIZE;
                break;

+       case 0x16:
+               max_size = F16H_MPB_MAX_SIZE;
+               break;

        default:
                max_size = F1XH_MPB_MAX_SIZE;
                break;

Because it looks like without this patch, some valid microcode updates
would be rejected by the kernel...


Cheers, Gene


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