The current acpi_table_upgrade() relies on initrd_start, but this var is
only valid after relocate_initrd(). There is requirement to extract the
acpi info from initrd before memblock-allocator can work(see [2/4]), hence
acpi_table_upgrade() need to accept the input param directly.
Signed-off-by: Pingfan Liu <kernelfans@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
arch/arm64/kernel/setup.c | 2 +-
arch/x86/kernel/setup.c | 2 +-
drivers/acpi/tables.c | 4 +---
include/linux/acpi.h | 4 ++--
4 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 4b0e123..48cb98c 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -315,7 +315,7 @@ void __init setup_arch(char **cmdline_p)
paging_init();
efi_apply_persistent_mem_reservations();
- acpi_table_upgrade();
+ acpi_table_upgrade((void *)initrd_start, initrd_end - initrd_start);
/* Parse the ACPI tables for possible boot-time configuration */
acpi_boot_table_init();
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 3d872a5..acbcd62 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1175,8 +1175,8 @@ void __init setup_arch(char **cmdline_p)
reserve_initrd();
- acpi_table_upgrade();
+ acpi_table_upgrade((void *)initrd_start, initrd_end - initrd_start);
vsmp_init();
io_delay_init();
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 48eabb6..d29b05c 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -471,10 +471,8 @@ static DECLARE_BITMAP(acpi_initrd_installed, NR_ACPI_INITRD_TABLES);
#define MAP_CHUNK_SIZE (NR_FIX_BTMAPS << PAGE_SHIFT)
-void __init acpi_table_upgrade(void)
+void __init acpi_table_upgrade(void *data, size_t size)
{
- void *data = (void *)initrd_start;
- size_t size = initrd_end - initrd_start;
int sig, no, table_nr = 0, total_offset = 0;
long offset = 0;
struct acpi_table_header *table;
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 87715f2..44dcbba 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1272,9 +1272,9 @@ acpi_graph_get_remote_endpoint(const struct fwnode_handle *fwnode,
#endif
#ifdef CONFIG_ACPI_TABLE_UPGRADE
-void acpi_table_upgrade(void);
+void acpi_table_upgrade(void *data, size_t size);
#else
-static inline void acpi_table_upgrade(void) { }
+static inline void acpi_table_upgrade(void *data, size_t size) { }
#endif
#if defined(CONFIG_ACPI) && defined(CONFIG_ACPI_WATCHDOG)
--
2.7.4
