[0/5] CXL Region Provisioning Fixes

Message

Dan Williams July 23, 2022, 12:55 a.m. UTC

Here is a small collection of fixes that have cropped after cutting the
new cxl/pending baseline.

The first is just a module loading fixup to make it possible to run
cxl_test on a system without an ACPI0017 device to preload the cxl_acpi
driver.

Patch 2 cleans up an attribute that is relevant for all decoders
*except* root decoders.

Patch 3 cleans up ACPI CFMWS implementations that specify a region
granularity other than the minimum when cross-host-bridge interleaving
is disabled.

The final patches are the meat of the fixes to constrain the interleave
granularity settings to ones that do not cause aliasing or DPA decode
gaps. See the details in patch 5. Expect more of these fixups as the
testing continues to mature.

---

Dan Williams (5):
      cxl/acpi: Autoload driver for 'cxl_acpi' test devices
      cxl/region: Delete 'region' attribute from root decoders
      cxl/acpi: Minimize granularity for x1 interleaves
      cxl/region: Stop initializing interleave granularity
      cxl/region: Constrain region granularity scaling factor


 drivers/cxl/acpi.c        |   13 +++++++++
 drivers/cxl/core/port.c   |    3 +-
 drivers/cxl/core/region.c |   65 ++++++++++++++++++++++++++++++++++++++++++---
 3 files changed, 75 insertions(+), 6 deletions(-)

base-commit: b282b26d11c50d48b336fedb5f74b2eca3f7b94c