mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 05:18:41 +07:00
8a1ccfbc9e
In preparation for enabling the stackleak plugin on arm64, we need a way to get the bounds of the current stack. Extend on_accessible_stack to get this information. Acked-by: Alexander Popov <alex.popov@linux.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Laura Abbott <labbott@redhat.com> [will: folded in fix for allmodconfig build breakage w/ sdei] Signed-off-by: Will Deacon <will.deacon@arm.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (C) 2017 Arm Ltd.
|
|
#ifndef __ASM_SDEI_H
|
|
#define __ASM_SDEI_H
|
|
|
|
/* Values for sdei_exit_mode */
|
|
#define SDEI_EXIT_HVC 0
|
|
#define SDEI_EXIT_SMC 1
|
|
|
|
#define SDEI_STACK_SIZE IRQ_STACK_SIZE
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/preempt.h>
|
|
#include <linux/types.h>
|
|
|
|
#include <asm/virt.h>
|
|
|
|
extern unsigned long sdei_exit_mode;
|
|
|
|
/* Software Delegated Exception entry point from firmware*/
|
|
asmlinkage void __sdei_asm_handler(unsigned long event_num, unsigned long arg,
|
|
unsigned long pc, unsigned long pstate);
|
|
|
|
/* and its CONFIG_UNMAP_KERNEL_AT_EL0 trampoline */
|
|
asmlinkage void __sdei_asm_entry_trampoline(unsigned long event_num,
|
|
unsigned long arg,
|
|
unsigned long pc,
|
|
unsigned long pstate);
|
|
|
|
/*
|
|
* The above entry point does the minimum to call C code. This function does
|
|
* anything else, before calling the driver.
|
|
*/
|
|
struct sdei_registered_event;
|
|
asmlinkage unsigned long __sdei_handler(struct pt_regs *regs,
|
|
struct sdei_registered_event *arg);
|
|
|
|
unsigned long sdei_arch_get_entry_point(int conduit);
|
|
#define sdei_arch_get_entry_point(x) sdei_arch_get_entry_point(x)
|
|
|
|
struct stack_info;
|
|
|
|
bool _on_sdei_stack(unsigned long sp, struct stack_info *info);
|
|
static inline bool on_sdei_stack(unsigned long sp,
|
|
struct stack_info *info)
|
|
{
|
|
if (!IS_ENABLED(CONFIG_VMAP_STACK))
|
|
return false;
|
|
if (!IS_ENABLED(CONFIG_ARM_SDE_INTERFACE))
|
|
return false;
|
|
if (in_nmi())
|
|
return _on_sdei_stack(sp, info);
|
|
|
|
return false;
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* __ASM_SDEI_H */
|