Messages in this thread | | | Subject | RE: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree | Date | Fri, 7 Dec 2007 13:38:00 -0800 | From | "Pallipadi, Venkatesh" <> |
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>-----Original Message----- >From: Pavel Machek [mailto:pavel@ucw.cz] >Sent: Wednesday, December 05, 2007 3:17 AM >To: Pallipadi, Venkatesh >Cc: Andrew Morton; lkml@rtr.ca; abelay@novell.com; >lenb@kernel.org; mlord@pobox.com; rjw@sisk.pl; >linux-kernel@vger.kernel.org; linux-acpi@vger.kernel.org >Subject: Re: + restore-missing-sysfs-max_cstate-attr.patch >added to -mm tree > >Hi! > >> >It is not known whether Mark is actually writing to this >> >thing. Perhaps >> >read-only permissions would be a suitable fix? >> > >> >> Exporting it as read only should be OK. We also need to know if there >> are hard user space dependency on writing to this from userspace. > >Some people are manipulating it from their suspend scripts.. >
That is done by default in kernel now. Deep C-states are disabled between suspend and resume.
Thanks, Venki
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