On Thu, Apr 14, 2022 at 12:59:09PM +0000, Limonciello, Mario wrote: > [AMD Official Use Only] > > > > > -----Original Message----- > > From: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> > > Sent: Thursday, April 14, 2022 05:57 > > To: Limonciello, Mario <Mario.Limonciello@xxxxxxx> > > Cc: stable@xxxxxxxxxxxxxxx; Gong, Richard <Richard.Gong@xxxxxxx> > > Subject: Re: Allow playing dead in C3 for 5.15.y > > > > On Tue, Apr 12, 2022 at 10:15:37PM +0000, Limonciello, Mario wrote: > > > [Public] > > > > > > Hi, > > > > > > A change went into 5.17 to allow CPUs to play dead in the C3 state which > > fixed freezes on s2idle entry if a CPU is offlined by a user. > > > This has had some time to bake now, and a regression was identified on an > > ancient machine that is now fixed. > > > > > > Can you please backport these commits to 5.15.y to fix that problem and > > avoid the regression? > > > commit d6b88ce2eb9d2698eb24451eb92c0a1649b17bb1 ("ACPI: processor > > idle: Allow playing dead in C3 state") > > > > Now queued up. > > > > > commit 0f00b1b00a44bf3b5e905dabfde2d51c490678ad ("ACPI: processor: > > idle: fix lockup regression on 32-bit ThinkPad T40"). > > My apologies; I must have had two references in my tree. The correct hash is > bfe55a1f7fd6bfede16078bf04c6250fbca11588 That worked, thanks.