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x86/tboot: Mark tboot static 

This structure is only really used in tboot.c.  The only exception
is a single tboot_enabled check, but for that we don't need an inline
function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200428051703.1625952-1-hch@lst.de
alistair/sunxi64-5.8
Christoph Hellwig 2020-04-28 07:17:03 +02:00 committed by Borislav Petkov
parent 694cfd87b0
commit 767dea211c
2 changed files with 7 additions and 9 deletions
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8
arch/x86/kernel/tboot.c
View File

@ -35,8 +35,7 @@
#include "../realmode/rm/wakeup.h"
/* Global pointer to shared data; NULL means no measured launch. */
struct tboot *tboot __read_mostly;
EXPORT_SYMBOL(tboot);
static struct tboot *tboot __read_mostly;
/* timeout for APs (in secs) to enter wait-for-SIPI state during shutdown */
#define AP_WAIT_TIMEOUT 1
@ -46,6 +45,11 @@ EXPORT_SYMBOL(tboot);
static u8 tboot_uuid[16] __initdata = TBOOT_UUID;
bool tboot_enabled(void)
{
return tboot != NULL;
}
void __init tboot_probe(void)
{
/* Look for valid page-aligned address for shared page. */

8
include/linux/tboot.h
View File

@ -121,13 +121,7 @@ struct tboot {
#define TBOOT_UUID {0xff, 0x8d, 0x3c, 0x66, 0xb3, 0xe8, 0x82, 0x4b, 0xbf,\
0xaa, 0x19, 0xea, 0x4d, 0x5, 0x7a, 0x8}
extern struct tboot *tboot;
static inline int tboot_enabled(void)
{
return tboot != NULL;
}
bool tboot_enabled(void);
extern void tboot_probe(void);
extern void tboot_shutdown(u32 shutdown_type);
extern struct acpi_table_header *tboot_get_dmar_table(