mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 22:39:20 +07:00
45451914c8
We already have __hyp_text_{start,end} to express the boundaries
of the HYP text section, and __kvm_hyp_code_{start,end} are getting
in the way of a more modular world switch code.
Just turn __kvm_hyp_code_{start,end} into #defines mapping the
linker-emited symbols.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
* Author: Marc Zyngier <marc.zyngier@arm.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __ASM__VIRT_H
|
|
#define __ASM__VIRT_H
|
|
|
|
#define BOOT_CPU_MODE_EL1 (0xe11)
|
|
#define BOOT_CPU_MODE_EL2 (0xe12)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/*
|
|
* __boot_cpu_mode records what mode CPUs were booted in.
|
|
* A correctly-implemented bootloader must start all CPUs in the same mode:
|
|
* In this case, both 32bit halves of __boot_cpu_mode will contain the
|
|
* same value (either 0 if booted in EL1, BOOT_CPU_MODE_EL2 if booted in EL2).
|
|
*
|
|
* Should the bootloader fail to do this, the two values will be different.
|
|
* This allows the kernel to flag an error when the secondaries have come up.
|
|
*/
|
|
extern u32 __boot_cpu_mode[2];
|
|
|
|
void __hyp_set_vectors(phys_addr_t phys_vector_base);
|
|
phys_addr_t __hyp_get_vectors(void);
|
|
|
|
/* Reports the availability of HYP mode */
|
|
static inline bool is_hyp_mode_available(void)
|
|
{
|
|
return (__boot_cpu_mode[0] == BOOT_CPU_MODE_EL2 &&
|
|
__boot_cpu_mode[1] == BOOT_CPU_MODE_EL2);
|
|
}
|
|
|
|
/* Check if the bootloader has booted CPUs in different modes */
|
|
static inline bool is_hyp_mode_mismatched(void)
|
|
{
|
|
return __boot_cpu_mode[0] != __boot_cpu_mode[1];
|
|
}
|
|
|
|
/* The section containing the hypervisor text */
|
|
extern char __hyp_text_start[];
|
|
extern char __hyp_text_end[];
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* ! __ASM__VIRT_H */
|