KVM: arm64: Add .hyp.data..ro_after_init ELF section

Browse source

Add rules for renaming the .data..ro_after_init ELF section in KVM nVHE
object files to .hyp.data..ro_after_init, linking it into the kernel
and mapping it in hyp at runtime.

The section is RW to the host, then mapped RO in hyp. The expectation is
that the host populates the variables in the section and they are never
changed by hyp afterwards.

Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201202184122.26046-13-dbrazdil@google.com

...

This commit is contained in:

David Brazdil 2020-12-02 18:41:08 +00:00 • committed by Marc Zyngier

parent d3e1086c64

commit 2d7bf218ca

4 changed files with 20 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

arch/arm64/include/asm/sections.h

View file

10

arch/arm64/kernel/vmlinux.lds.S

View file

8

arch/arm64/kvm/arm.c

View file

1

arch/arm64/kvm/hyp/nvhe/hyp.lds.S

View file