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authorJuergen Gross <jgross@suse.com>2018-02-19 13:09:04 +0300
committerIngo Molnar <mingo@kernel.org>2018-02-26 10:43:20 +0300
commitdfc9327ab7c99bc13e12106448615efba833886b (patch)
treec3284f933637991743e016fc8ba0fc6ad3a2cc1c /include/linux/acpi.h
parent3f7df3efeb415610d27aecc282ff96d4a22f0168 (diff)
downloadlinux-dfc9327ab7c99bc13e12106448615efba833886b.tar.xz
acpi: Introduce acpi_arch_get_root_pointer() for getting rsdp address
Add an architecture specific function to get the address of the RSDP table. Per default it will just return 0 indicating falling back to the current mechanism. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Eric Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: boris.ostrovsky@oracle.com Cc: lenb@kernel.org Cc: linux-acpi@vger.kernel.org Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/20180219100906.14265-2-jgross@suse.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/acpi.h')
-rw-r--r--include/linux/acpi.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 968173ec2726..15bfb15c2fa5 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -623,6 +623,13 @@ bool acpi_gtdt_c3stop(int type);
int acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem, int *timer_count);
#endif
+#ifndef ACPI_HAVE_ARCH_GET_ROOT_POINTER
+static inline u64 acpi_arch_get_root_pointer(void)
+{
+ return 0;
+}
+#endif
+
#else /* !CONFIG_ACPI */
#define acpi_disabled 1