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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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461e96a337
PA Semi will wake from low power state at the system reset interrupt, with the event encoded in SRR1, rather than waking at the interrupt vector that corresponds to that event. The system reset handler for this platform decodes SRR1 event reason and calls the interrupt handler to process it directly from the system reset handlre. A subsequent change will treat the system reset interrupt as a Linux NMI with its own per-CPU stack, and this will no longer work. Remove the external and decrementer handlers from the system reset handler. - The external exception remains raised and will fire again at the EE interrupt vector when system reset returns. - The decrementer is set to 1 so it will be raised again and fire when the system reset returns. It is possible to branch to an idle handler from the system reset interrupt (like POWER does), then restore a normal stack and restore this optimisation. But simplicity wins for now. Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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| .. | ||
| dma_lib.c | ||
| gpio_mdio.c | ||
| idle.c | ||
| iommu.c | ||
| Kconfig | ||
| Makefile | ||
| misc.c | ||
| msi.c | ||
| pasemi.h | ||
| pci.c | ||
| powersave.S | ||
| setup.c | ||
| time.c | ||