[lkml]   [2022]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 0/2] Add a workaround for s2idle resume on Lenovo laptops

On 4/29/22 05:04, Mario Limonciello wrote:
> Lenovo Thinkpads have a SMI handler during the D0 transition for NVME
> devices specifically during resume from s2idle. When the IOMMU
> translation layer is enabled for NVME devices (which is the default
> behavior per the IVRS table), then this SMI handler causes a very long
> resume time (10+ seconds).
> For the common s2idle circumstance on Linux this SMI handler is
> unnecessary and just significantly inflates resume time. To avoid it,
> add a new s2idle resume handler to thinkpad_acpi that will prevent it
> from running on known problematic systems. If the SMI handler is fixed on
> these systems the DMI data can be modified to exclude them or only match
> problematic BIOS versions.
> Mario Limonciello (2):
> platform/x86: thinkpad_acpi: Convert btusb DMI list to quirks
> platform/x86: thinkpad_acpi: Add a s2idle resume quirk for a number of
> laptops
> drivers/platform/x86/thinkpad_acpi.c | 134 ++++++++++++++++++++++++++-
> 1 file changed, 131 insertions(+), 3 deletions(-)

Thank you for your patch-series, I've applied the series to my
review-hans branch:

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next

I'll also cherry-pick these into the pdx86 fixes branch and add them
to my next 5.18 fixes pull-req to Linus.



 \ /
  Last update: 2022-05-02 17:32    [W:0.447 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site