| commit | 3ad62192097443e8c3a8e244475bacaecb894d4e | [log] [tgz] |
|---|---|---|
| author | Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> | Thu Sep 05 14:31:44 2019 -0500 |
| committer | Bjorn Helgaas <bhelgaas@google.com> | Tue Oct 15 16:39:09 2019 -0500 |
| tree | 7bc48ce9fb0793124e84f9e3dda92dcc829d84ce | |
| parent | 2b0ae7cc3bfc3fae124c25870f41291c670b4549 [diff] |
PCI/ATS: Disable PF/VF ATS service independently Previously we didn't disable the PF ATS until all associated VFs had disabled it. But per PCIe spec r5.0, sec 9.3.7.8, the ATS Capability in VFs and associated PFs may be enabled independently. Leaving ATS enabled in the PF unnecessarily may have power and performance impacts. Remove this dependency logic in the ATS enable/disable code. [bhelgaas: commit log] Suggested-by: Ashok Raj <ashok.raj@intel.com> Link: https://lore.kernel.org/r/8163ab8fa66afd2cba514ae95d29ab12104781aa.1567029860.git.sathyanarayanan.kuppuswamy@linux.intel.com Link: https://lore.kernel.org/r/20190905193146.90250-4-helgaas@kernel.org Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Ashok Raj <ashok.raj@intel.com> Cc: Keith Busch <keith.busch@intel.com>