Hi all,
Today's linux-next merge of the tip tree got a conflict in:
arch/arm64/kernel/acpi.c
between commit:
f26527b1428f ("irqchip / GIC: Convert the GIC driver to ACPI probing")
from the pm tree and commit:
89e44b51cc0d ("arm64, acpi/apei: Implement arch_apei_get_mem_attributes()")
from the tip tree.
I fixed it up (see below) and can carry the fix as necessary (no action
is required).
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
diff --cc arch/arm64/kernel/acpi.c
index d6463bba2360,137d537ddceb..000000000000
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@@ -205,3 -210,52 +210,27 @@@ void __init acpi_boot_table_init(void
disable_acpi();
}
}
+
-void __init acpi_gic_init(void)
-{
- struct acpi_table_header *table;
- acpi_status status;
- acpi_size tbl_size;
- int err;
-
- if (acpi_disabled)
- return;
-
- status = acpi_get_table_with_size(ACPI_SIG_MADT, 0, &table, &tbl_size);
- if (ACPI_FAILURE(status)) {
- const char *msg = acpi_format_exception(status);
-
- pr_err("Failed to get MADT table, %s\n", msg);
- return;
- }
-
- err = gic_v2_acpi_init(table);
- if (err)
- pr_err("Failed to initialize GIC IRQ controller");
-
- early_acpi_os_unmap_memory((char *)table, tbl_size);
-}
-
+ #ifdef CONFIG_ACPI_APEI
+ pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
+ {
+ /*
+ * According to "Table 8 Map: EFI memory types to AArch64 memory
+ * types" of UEFI 2.5 section 2.3.6.1, each EFI memory type is
+ * mapped to a corresponding MAIR attribute encoding.
+ * The EFI memory attribute advises all possible capabilities
+ * of a memory region. We use the most efficient capability.
+ */
+
+ u64 attr;
+
+ attr = efi_mem_attributes(addr);
+ if (attr & EFI_MEMORY_WB)
+ return PAGE_KERNEL;
+ if (attr & EFI_MEMORY_WT)
+ return __pgprot(PROT_NORMAL_WT);
+ if (attr & EFI_MEMORY_WC)
+ return __pgprot(PROT_NORMAL_NC);
+ return __pgprot(PROT_DEVICE_nGnRnE);
+ }
+ #endif
--
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