On Fri, Dec 15, 2023 at 12:34 PM Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote: > > Hi Everyone, > > After > > https://patchwork.kernel.org/project/linux-acpi/patch/5745568.DvuYhMxLoT@kreacher/ > > the SCI interrupt handler is threaded, so ACPICA spin locks can be used without > disabling interrupts, because they cannot be acquired from a hardirq handler > running on the same CPU as any code already holding the spin lock. This patch > [1/3] removes disabling interrupts from acpi_os_acquire_lock() and updates > acpi_os_release_lock() accordingly. > > Patch [2/2] uses the observation that if acpi_handle_interrupt() can run > in a threaded interrupt handler in the GPE case, it can also run in a threaded > interrupt handler in the dedicated IRQ case, so it makes the EC driver use a > threaded handler for the dedicated EC interrupt. > > Patch [3/3], in analogy with patch [1/3], uses the observation that after patch > [2/2] all of the EC code runs in thread context, so it need not disable > interrupts on the local CPU before acquiring a spin lock, so the EC driver is > updated to operate its spin lock without disabling interrupts. I don't see any objections to these patches, so queuing them up for 6.8. Thanks!
