mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-09-11 01:10:54 -04:00
Code Issues Packages Projects Releases Wiki Activity

firmware: arm_sdei: add SDEI_EVENT_SIGNAL support

Browse Source 
Add sdei_event_signal(), a thin wrapper over the SDEI_EVENT_SIGNAL call
(DEN0054) that makes the software-signalled event (event 0) pending on a
target PE -- delivered NMI-like even when that PE has interrupts masked.
It takes no locks, so it is safe to call from NMI / crash context.

Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Yin Fengwei <fengwei_yin@linux.alibaba.com>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Kiryl Shutsemau (Meta)
2026-06-29 16:07:16 +01:00
committed by Will Deacon
parent 5686f2bed0
commit 9141eda9ee
3 changed files with 19 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/uapi/linux/arm_sdei.h
View File

@@ -22,6 +22,7 @@
#define SDEI_1_0_FN_SDEI_PE_UNMASK SDEI_1_0_FN(0x0C)
#define SDEI_1_0_FN_SDEI_INTERRUPT_BIND SDEI_1_0_FN(0x0D)
#define SDEI_1_0_FN_SDEI_INTERRUPT_RELEASE SDEI_1_0_FN(0x0E)
#define SDEI_1_0_FN_SDEI_EVENT_SIGNAL SDEI_1_0_FN(0x0F)
#define SDEI_1_0_FN_SDEI_PRIVATE_RESET SDEI_1_0_FN(0x11)
#define SDEI_1_0_FN_SDEI_SHARED_RESET SDEI_1_0_FN(0x12)