Jia He 12064c1768 Revert "ACPI: Add memory semantics to acpi_os_map_memory()" ... This reverts commit 437b38c511. The memory semantics added in commit 437b38c511 causes SystemMemory Operation region, whose address range is not described in the EFI memory map to be mapped as NormalNC memory on arm64 platforms (through acpi_os_map_memory() in acpi_ex_system_memory_space_handler()). This triggers the following abort on an ARM64 Ampere eMAG machine, because presumably the physical address range area backing the Opregion does not support NormalNC memory attributes driven on the bus. Internal error: synchronous external abort: 96000410 [#1] SMP Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.14.0+ #462 Hardware name: MiTAC RAPTOR EV-883832-X3-0001/RAPTOR, BIOS 0.14 02/22/2019 pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [...snip...] Call trace: acpi_ex_system_memory_space_handler+0x26c/0x2c8 acpi_ev_address_space_dispatch+0x228/0x2c4 acpi_ex_access_region+0x114/0x268 acpi_ex_field_datum_io+0x128/0x1b8 acpi_ex_extract_from_field+0x14c/0x2ac acpi_ex_read_data_from_field+0x190/0x1b8 acpi_ex_resolve_node_to_value+0x1ec/0x288 acpi_ex_resolve_to_value+0x250/0x274 acpi_ds_evaluate_name_path+0xac/0x124 acpi_ds_exec_end_op+0x90/0x410 acpi_ps_parse_loop+0x4ac/0x5d8 acpi_ps_parse_aml+0xe0/0x2c8 acpi_ps_execute_method+0x19c/0x1ac acpi_ns_evaluate+0x1f8/0x26c acpi_ns_init_one_device+0x104/0x140 acpi_ns_walk_namespace+0x158/0x1d0 acpi_ns_initialize_devices+0x194/0x218 acpi_initialize_objects+0x48/0x50 acpi_init+0xe0/0x498 If the Opregion address range is not present in the EFI memory map there is no way for us to determine the memory attributes to use to map it - defaulting to NormalNC does not work (and it is not correct on a memory region that may have read side-effects) and therefore commit 437b38c511 should be reverted, which means reverting back to the original behavior whereby address ranges that are mapped using acpi_os_map_memory() default to the safe devicenGnRnE attributes on ARM64 if the mapped address range is not defined in the EFI memory map. Fixes: 437b38c511 ("ACPI: Add memory semantics to acpi_os_map_memory()") Signed-off-by: Jia He <justin.he@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2021-09-23 20:39:36 +02:00
..
platform	isystem: ship and use stdarg.h	2021-08-19 09:02:55 +09:00
acbuffer.h	ACPICA: Add _PLD panel positions	2021-06-07 14:04:43 +02:00
acconfig.h	ACPICA: Add support for PlatformRtMechanism OperationRegion handler	2021-06-07 14:04:43 +02:00
acexcep.h
acnames.h	ACPICA: Add method name "_DIS" For use with aslmethod.c	2021-08-16 16:47:02 +02:00
acoutput.h	ACPICA: Macros should not use a trailing semicolon	2021-08-16 16:47:02 +02:00
acpi.h
acpi_bus.h	ACPI: fix NULL pointer dereference	2021-07-24 15:25:54 -07:00
acpi_drivers.h
acpi_io.h	Revert "ACPI: Add memory semantics to acpi_os_map_memory()"	2021-09-23 20:39:36 +02:00
acpi_lpat.h
acpi_numa.h	ACPI: NUMA: fix typo in a comment	2021-06-07 16:41:10 +02:00
acpiosxf.h
acpixf.h	ACPICA: Update version to 20210730	2021-08-16 16:47:02 +02:00
acrestyp.h
actbl.h
actbl1.h	ACPICA: Headers: Add new DBG2 Serial Port Subtypes	2021-08-16 16:47:02 +02:00
actbl2.h	ACPICA: iASL: Add support for the AEST table (data compiler)	2021-08-16 16:47:01 +02:00
actbl3.h	ACPICA: iASL: Fix for WPBT table with no command-line arguments	2021-08-16 16:47:02 +02:00
actypes.h
acuuid.h
apei.h
battery.h
button.h
cppc_acpi.h	ACPI: CPPC: Introduce cppc_get_nominal_perf()	2021-09-07 21:15:16 +02:00
ghes.h
hed.h
nfit.h
pcc.h
pdc_intel.h
processor.h
reboot.h
video.h