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authorJames Morse <james.morse@arm.com>2019-01-29 18:48:53 +0000
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-02-07 23:10:45 +0100
commitf2a7e059aa7a6a22a6f4612f31ee29e726a3bfd0 (patch)
treef37bc1ba0e2d417139c4e1040382c2a0b620a94d /tools/perf/scripts/python/futex-contention.py
parentb484079b9f520cc9a0797d885f1cd7f64b72b1b2 (diff)
ACPI / APEI: Pass ghes and estatus separately to avoid a later copy
The NMI-like notifications scribble over ghes->estatus, before copying it somewhere else. If this interrupts the ghes_probe() code calling ghes_proc() on each struct ghes, the data is corrupted. All the NMI-like notifications should use a queued estatus entry from the beginning, instead of the ghes version, then copying it. To do this, break up any use of "ghes->estatus" so that all functions take the estatus as an argument. This patch just moves these ghes->estatus dereferences into separate arguments, no change in behaviour. struct ghes becomes unused in ghes_clear_estatus() as it only wanted ghes->estatus, which we now pass directly. This is removed. Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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