On Sun, 2018-03-18 at 11:14 +0100, Greg Kroah-Hartman wrote:
On Fri, Mar 16, 2018 at 04:55:37PM -0600, Jerry Hoemann wrote:
Greg,
Sorry, if I'm missing something, but I see 3 patches for hpwdt queued up for 4.4:
queue-4.4/watchdog-hpwdt-fix-unused-variable-warning.patch queue-4.4/watchdog-hpwdt-smbios-check.patch queue-4.4/watchdog-hpwdt-check-source-of-nmi.patch
Shouldn't there also be a 4.4 patch for
commit 2b3d89b402b085b08498e896c65267a145bed486 watchdog: hpwdt: Remove legacy NMI sourcing.
As there was for 4.15, 4.14, and 4.9?
It does not apply to the 4.4.y kernel branch. If you feel it should be there, please provide a working backport.
commit 2b3d89b40 is the Spectre related patch.
If you look closely, not many Spectre-related patches are merged into 4.4.y as no one has taken the time to do the backporting. I thought someone was working on this, but odds are they just moved to 4.9.y or 4.14.y as everyone really should if they care about these issues with their platforms.
So if you care about Spectre, I strongly recommend using 4.14.y or newer.
I think you have most of the Spectre stuff aside from microcode supported fixes. These are still missing on the 4.4 branch though:
8fa80c503b48 nospec: Move array_index_nospec() parameter checking into separate macro 1d91c1d2c80c nospec: Kill array_index_nospec_mask_check()
I think there may also be some extra uaccess functions that didn't get the nospec treatment.
I'll probably look into backporting the microcode stuff to the older branches (4.4, then 3.16 and 3.2) at some point.
Ben.