diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-01 13:44:28 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-01 13:44:28 -0700 |
commit | ae1a4113c24470007424ea0e1d2e31336edd7296 (patch) | |
tree | ea8e6aa3201f3e86dbebd84e6eae360f80f756e8 /arch/x86/kernel/tboot.c | |
parent | d861f6e6829ce586bcf5823ab7d348f09be3c8fb (diff) | |
parent | 5214028dd89e49ba27007c3ee475279e584261f0 (diff) |
Merge tag 'x86-boot-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
"Misc updates:
- Add the initrdmem= boot option to specify an initrd embedded in RAM
(flash most likely)
- Sanitize the CS value earlier during boot, which also fixes SEV-ES
- Various fixes and smaller cleanups"
* tag 'x86-boot-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Correct relocation destination on old linkers
x86/boot/compressed/64: Switch to __KERNEL_CS after GDT is loaded
x86/boot: Fix -Wint-to-pointer-cast build warning
x86/boot: Add kstrtoul() from lib/
x86/tboot: Mark tboot static
x86/setup: Add an initrdmem= option to specify initrd physical address
Diffstat (limited to 'arch/x86/kernel/tboot.c')
-rw-r--r-- | arch/x86/kernel/tboot.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c index b89f6ac6a0c0..b2942b2dbfcf 100644 --- a/arch/x86/kernel/tboot.c +++ b/arch/x86/kernel/tboot.c @@ -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. */ |