ARM: KVM: Switch to C-based stage2 init
As we now have hooks to setup VTCR from C code, let's drop the original VTCR setup and reimplement it as part of the HYP code. Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Родитель
b98e2e728e
Коммит
d4c7688c51
|
@ -98,6 +98,8 @@ extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
|
|||
extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
|
||||
|
||||
extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
|
||||
|
||||
extern void __init_stage2_translation(void);
|
||||
#endif
|
||||
|
||||
#endif /* __ARM_KVM_ASM_H__ */
|
||||
|
|
|
@ -224,6 +224,7 @@ static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr,
|
|||
|
||||
static inline void __cpu_init_stage2(void)
|
||||
{
|
||||
kvm_call_hyp(__init_stage2_translation);
|
||||
}
|
||||
|
||||
static inline int kvm_arch_dev_ioctl_check_extension(long ext)
|
||||
|
|
|
@ -11,3 +11,4 @@ obj-$(CONFIG_KVM_ARM_HOST) += banked-sr.o
|
|||
obj-$(CONFIG_KVM_ARM_HOST) += entry.o
|
||||
obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o
|
||||
obj-$(CONFIG_KVM_ARM_HOST) += switch.o
|
||||
obj-$(CONFIG_KVM_ARM_HOST) += s2-setup.o
|
||||
|
|
|
@ -71,6 +71,8 @@
|
|||
#define HCPTR __ACCESS_CP15(c1, 4, c1, 2)
|
||||
#define HSTR __ACCESS_CP15(c1, 4, c1, 3)
|
||||
#define TTBCR __ACCESS_CP15(c2, 0, c0, 2)
|
||||
#define HTCR __ACCESS_CP15(c2, 4, c0, 2)
|
||||
#define VTCR __ACCESS_CP15(c2, 4, c1, 2)
|
||||
#define DACR __ACCESS_CP15(c3, 0, c0, 0)
|
||||
#define DFSR __ACCESS_CP15(c5, 0, c0, 0)
|
||||
#define IFSR __ACCESS_CP15(c5, 0, c0, 1)
|
||||
|
|
|
@ -0,0 +1,34 @@
|
|||
/*
|
||||
* Copyright (C) 2016 - 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/>.
|
||||
*/
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <asm/kvm_arm.h>
|
||||
#include <asm/kvm_asm.h>
|
||||
|
||||
#include "hyp.h"
|
||||
|
||||
void __hyp_text __init_stage2_translation(void)
|
||||
{
|
||||
u64 val;
|
||||
|
||||
val = read_sysreg(VTCR) & ~VTCR_MASK;
|
||||
|
||||
val |= read_sysreg(HTCR) & VTCR_HTCR_SH;
|
||||
val |= KVM_VTCR_SL0 | KVM_VTCR_T0SZ | KVM_VTCR_S;
|
||||
|
||||
write_sysreg(val, VTCR);
|
||||
}
|
|
@ -84,14 +84,6 @@ __do_hyp_init:
|
|||
orr r0, r0, r1
|
||||
mcr p15, 4, r0, c2, c0, 2 @ HTCR
|
||||
|
||||
mrc p15, 4, r1, c2, c1, 2 @ VTCR
|
||||
ldr r2, =VTCR_MASK
|
||||
bic r1, r1, r2
|
||||
bic r0, r0, #(~VTCR_HTCR_SH) @ clear non-reusable HTCR bits
|
||||
orr r1, r0, r1
|
||||
orr r1, r1, #(KVM_VTCR_SL0 | KVM_VTCR_T0SZ | KVM_VTCR_S)
|
||||
mcr p15, 4, r1, c2, c1, 2 @ VTCR
|
||||
|
||||
@ Use the same memory attributes for hyp. accesses as the kernel
|
||||
@ (copy MAIRx ro HMAIRx).
|
||||
mrc p15, 0, r0, c10, c2, 0
|
||||
|
|
Загрузка…
Ссылка в новой задаче