On 8 January 2014 12:46, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Wednesday 08 January 2014, al.stone@xxxxxxxxxx wrote: >> Even though support for X86 in hardware reduced mode is possible, it >> is NOT enabled. Extensive effort has gone into the Linux kernel so that >> there is a single kernel image than can run on all x86 hardware; the kernel >> changes run-time behavior to adapt to the hardware being used. This is not >> currently possible with the existing ACPICA infrastructure but only presents >> a problem on achitectures supporting both hardware-reduced and legacy modes >> of ACPI -- i.e., on x86 only. > > Not sure about the logic here: While it's certainly possible to build a kernel > that runs on all x86 machines, it's also possible to build one that only > runs on some of them when some basic options are turned off. I don't see > any difference between that and what we have on ARM64 or the multiplatform > subset of ARM32. Would we ever need !CONFIG_ACPI_REDUCED_HARDWARE_ONLY on ARM or ARM64? If not, we could even make this always on for these archs. -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
