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/*
 * apei.h - ACPI Platform Error Interface
 */

#ifndef ACPI_APEI_H
#define ACPI_APEI_H

#include <linux/acpi.h>
#include <linux/cper.h>
#include <asm/ioctls.h>

#define APEI_ERST_INVALID_RECORD_ID	0xffffffffffffffffULL

#define APEI_ERST_CLEAR_RECORD		_IOW('E', 1, u64)
#define APEI_ERST_GET_RECORD_COUNT	_IOR('E', 2, u32)

#ifdef __KERNEL__

extern bool hest_disable;
extern int erst_disable;
#ifdef CONFIG_ACPI_APEI_GHES
extern bool ghes_disable;
#else
#define ghes_disable 1
#endif

#ifdef CONFIG_ACPI_APEI
void __init acpi_hest_init(void);
#else
static inline void acpi_hest_init(void) { return; }
#endif

typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
int apei_hest_parse(apei_hest_func_t func, void *data);

int erst_write(const struct cper_record_header *record);
ssize_t erst_get_record_count(void);
int erst_get_record_id_begin(int *pos);
int erst_get_record_id_next(int *pos, u64 *record_id);
void erst_get_record_id_end(void);
ssize_t erst_read(u64 record_id, struct cper_record_header *record,
		  size_t buflen);
int erst_clear(u64 record_id);

int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data);
void arch_apei_report_mem_error(int sev, struct cper_sec_mem_err *mem_err);
void arch_apei_flush_tlb_one(unsigned long addr);

#endif
#endif
curs and the system reboots (in case of the Yoga 710-11IKB this is very early during bootup). Fix that by always mapping the first page of physical memory into the EFI pagetables. We're free to hand this page to the BIOS, as trim_bios_range() will reserve the first page and isolate it away from memory allocators anyway. Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the regression on affected hardware, as this commit: ab72a27da ("x86/efi: Consolidate region mapping logic") later made the first physical frame not to be mapped anyway. Reported-by: Hanka Pavlikova <hanka@ucw.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Laura Abbott <labbott@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vojtech Pavlik <vojtech@ucw.cz> Cc: Waiman Long <waiman.long@hpe.com> Cc: linux-efi@vger.kernel.org Cc: stable@kernel.org # v4.8+ Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode") Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk [ Tidied up the changelog and the comment. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/sctp/objcnt.c')