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| author | Daniel Axtens <dja@axtens.net> | 2015-08-14 10:41:25 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-08-14 14:32:07 +0300 |
| commit | 13e68d8bd05c998cae452a4f3400af1e8edd852e (patch) | |
| tree | d17ff97c9f46a663b5cb4916fc333703b2cdfea4 /Documentation/ABI | |
| parent | 4e1efb403c1c016ae831bd9988a7d2e5e0af41a0 (diff) | |
| download | linux-13e68d8bd05c998cae452a4f3400af1e8edd852e.tar.xz | |
cxl: Allow the kernel to trust that an image won't change on PERST.
Provide a kernel API and a sysfs entry which allow a user to specify
that when a card is PERSTed, it's image will stay the same, allowing
it to participate in EEH.
cxl_reset is used to reflash the card. In that case, we cannot safely
assert that the image will not change. Therefore, disallow cxl_reset
if the flag is set.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-cxl | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl index acfe9df83139..b07e86d4597f 100644 --- a/Documentation/ABI/testing/sysfs-class-cxl +++ b/Documentation/ABI/testing/sysfs-class-cxl @@ -223,3 +223,13 @@ Description: write only Writing 1 will issue a PERST to card which may cause the card to reload the FPGA depending on load_image_on_perst. Users: https://github.com/ibm-capi/libcxl + +What: /sys/class/cxl/<card>/perst_reloads_same_image +Date: July 2015 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read/write + Trust that when an image is reloaded via PERST, it will not + have changed. + 0 = don't trust, the image may be different (default) + 1 = trust that the image will not change. +Users: https://github.com/ibm-capi/libcxl |