diff options
Diffstat (limited to 'arch/arm64/mm/trans_pgd-asm.S')
| -rw-r--r-- | arch/arm64/mm/trans_pgd-asm.S | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/arm64/mm/trans_pgd-asm.S b/arch/arm64/mm/trans_pgd-asm.S new file mode 100644 index 000000000..021c31573 --- /dev/null +++ b/arch/arm64/mm/trans_pgd-asm.S @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * Copyright (c) 2021, Microsoft Corporation. + * Pasha Tatashin <pasha.tatashin@soleen.com> + */ + +#include <linux/linkage.h> +#include <asm/assembler.h> +#include <asm/kvm_asm.h> + +.macro invalid_vector label +SYM_CODE_START_LOCAL(\label) + .align 7 + b \label +SYM_CODE_END(\label) +.endm + +.macro el1_sync_vector +SYM_CODE_START_LOCAL(el1_sync) + .align 7 + cmp x0, #HVC_SET_VECTORS /* Called from hibernate */ + b.ne 1f + msr vbar_el2, x1 + mov x0, xzr + eret +1: cmp x0, #HVC_SOFT_RESTART /* Called from kexec */ + b.ne 2f + mov x0, x2 + mov x2, x4 + mov x4, x1 + mov x1, x3 + br x4 +2: /* Unexpected argument, set an error */ + mov_q x0, HVC_STUB_ERR + eret +SYM_CODE_END(el1_sync) +.endm + +SYM_CODE_START(trans_pgd_stub_vectors) + invalid_vector hyp_stub_el2t_sync_invalid // Synchronous EL2t + invalid_vector hyp_stub_el2t_irq_invalid // IRQ EL2t + invalid_vector hyp_stub_el2t_fiq_invalid // FIQ EL2t + invalid_vector hyp_stub_el2t_error_invalid // Error EL2t + + invalid_vector hyp_stub_el2h_sync_invalid // Synchronous EL2h + invalid_vector hyp_stub_el2h_irq_invalid // IRQ EL2h + invalid_vector hyp_stub_el2h_fiq_invalid // FIQ EL2h + invalid_vector hyp_stub_el2h_error_invalid // Error EL2h + + el1_sync_vector // Synchronous 64-bit EL1 + invalid_vector hyp_stub_el1_irq_invalid // IRQ 64-bit EL1 + invalid_vector hyp_stub_el1_fiq_invalid // FIQ 64-bit EL1 + invalid_vector hyp_stub_el1_error_invalid // Error 64-bit EL1 + + invalid_vector hyp_stub_32b_el1_sync_invalid // Synchronous 32-bit EL1 + invalid_vector hyp_stub_32b_el1_irq_invalid // IRQ 32-bit EL1 + invalid_vector hyp_stub_32b_el1_fiq_invalid // FIQ 32-bit EL1 + invalid_vector hyp_stub_32b_el1_error_invalid // Error 32-bit EL1 + .align 11 +SYM_INNER_LABEL(__trans_pgd_stub_vectors_end, SYM_L_LOCAL) +SYM_CODE_END(trans_pgd_stub_vectors) + +# Check the trans_pgd_stub_vectors didn't overflow +.org . - (__trans_pgd_stub_vectors_end - trans_pgd_stub_vectors) + SZ_2K |