diff options
| author | David Brazdil <dbrazdil@google.com> | 2021-01-05 18:05:37 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-01-23 14:01:00 +0000 |
| commit | 8c49b5d43d4c45ca0bb0d1faa23feef2e76e89fa (patch) | |
| tree | 4701a348938accf04d577b0e5b680d30d6818cd7 /arch/arm64/kvm/hyp/nvhe/.gitignore | |
| parent | f7a4825d9569593b9a81f0768313b86175691ef1 (diff) | |
KVM: arm64: Generate hyp relocation data
Add a post-processing step to compilation of KVM nVHE hyp code which
calls a custom host tool (gen-hyprel) on the partially linked object
file (hyp sections' names prefixed).
The tool lists all R_AARCH64_ABS64 data relocations targeting hyp
sections and generates an assembly file that will form a new section
.hyp.reloc in the kernel binary. The new section contains an array of
32-bit offsets to the positions targeted by these relocations.
Since these addresses of those positions will not be determined until
linking of `vmlinux`, each 32-bit entry carries a R_AARCH64_PREL32
relocation with addend <section_base_sym> + <r_offset>. The linker of
`vmlinux` will therefore fill the slot accordingly.
This relocation data will be used at runtime to convert the kernel VAs
at those positions to hyp VAs.
Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210105180541.65031-5-dbrazdil@google.com
Diffstat (limited to 'arch/arm64/kvm/hyp/nvhe/.gitignore')
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/.gitignore | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/nvhe/.gitignore b/arch/arm64/kvm/hyp/nvhe/.gitignore index 695d73d0249e..5b6c43cc96f8 100644 --- a/arch/arm64/kvm/hyp/nvhe/.gitignore +++ b/arch/arm64/kvm/hyp/nvhe/.gitignore @@ -1,2 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only +gen-hyprel hyp.lds +hyp-reloc.S |