diff options
| author | Cédric Le Goater <[email protected]> | 2021-11-05 11:26:28 +0100 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2021-11-25 11:25:30 +1100 |
| commit | 756c52c632f5c2b054bb54b1ea9177329e4b8ce5 (patch) | |
| tree | a1aafd71e9afe642e5f8b1cfa92af1928a22d8a5 /tools/perf/scripts/python/flamegraph.py | |
| parent | bd5b00c6cf0c37fce1bcd94390044d7e1dd638e7 (diff) | |
powerpc/xive: Activate StoreEOI on P10
StoreEOI (the capability to EOI with a store) requires load-after-store
ordering in some cases to be reliable. P10 introduced a new offset for
load operations to enforce correct ordering and the XIVE driver has
the required support since kernel 5.8, commit b1f9be9392f0
("powerpc/xive: Enforce load-after-store ordering when StoreEOI is active")
Since skiboot v7, StoreEOI support is advertised on P10 with a new flag
on the PowerNV platform. See skiboot commit 4bd7d84afe46 ("xive/p10:
Introduce a new OPAL_XIVE_IRQ_STORE_EOI2 flag"). When detected,
activate the feature.
Signed-off-by: Cédric Le Goater <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/flamegraph.py')
0 files changed, 0 insertions, 0 deletions