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| author | Ira Weiny <ira.weiny@intel.com> | 2022-09-26 14:57:11 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-11-14 10:07:22 -0800 |
| commit | 487d828d751d90cf9ca594f45b02dd0e0d712b64 (patch) | |
| tree | fb83694896b6a27fa0fc2448a6044e041b470269 /lib/Kconfig | |
| parent | 278294798ac9118412c9624a801d3f20f2279363 (diff) | |
| download | linux-487d828d751d90cf9ca594f45b02dd0e0d712b64.tar.gz linux-487d828d751d90cf9ca594f45b02dd0e0d712b64.tar.bz2 linux-487d828d751d90cf9ca594f45b02dd0e0d712b64.zip | |
cxl/doe: Request exclusive DOE access
The PCIE Data Object Exchange (DOE) mailbox is a protocol run over
configuration cycles. It assumes one initiator at a time. While the
kernel has control of the mailbox user space writes could interfere with
the kernel access.
Mark DOE mailbox config space exclusive when iterated by the CXL driver.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20220926215711.2893286-3-ira.weiny@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'lib/Kconfig')
0 files changed, 0 insertions, 0 deletions