[PATCH 1/3] ACPI: table upgrade: use cacheable map for tables
From: Aleksey Makarov <hidden>
Date: 2016-05-17 12:07:40
Also in:
linux-acpi, lkml
Subsystem:
acpi, the rest · Maintainers:
"Rafael J. Wysocki", Linus Torvalds
The new memory allocated in acpi_table_initrd_init() is used to copy the upgraded tables to it. So it should be mapped with early_memunmap() instead of early_ioremap(). This is critical for ARM. Signed-off-by: Aleksey Makarov <redacted> --- drivers/acpi/tables.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index a372f9e..449a649 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c@@ -578,10 +578,10 @@ static void __init acpi_table_initrd_init(void *data, size_t size) clen = size; if (clen > MAP_CHUNK_SIZE - slop) clen = MAP_CHUNK_SIZE - slop; - dest_p = early_ioremap(dest_addr & PAGE_MASK, + dest_p = early_memremap(dest_addr & PAGE_MASK, clen + slop); memcpy(dest_p + slop, src_p, clen); - early_iounmap(dest_p, clen + slop); + early_memunmap(dest_p, clen + slop); src_p += clen; dest_addr += clen; size -= clen;
--
2.8.2