linux/arch/arm64
Quentin Perret e759604087 KVM: arm64: Introduce an early Hyp page allocator
With nVHE, the host currently creates all stage 1 hypervisor mappings at
EL1 during boot, installs them at EL2, and extends them as required
(e.g. when creating a new VM). But in a world where the host is no
longer trusted, it cannot have full control over the code mapped in the
hypervisor.

In preparation for enabling the hypervisor to create its own stage 1
mappings during boot, introduce an early page allocator, with minimal
functionality. This allocator is designed to be used only during early
bootstrap of the hyp code when memory protection is enabled, which will
then switch to using a full-fledged page allocator after init.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210319100146.1149909-11-qperret@google.com
2021-03-19 12:01:20 +00:00
..
boot regulator: Updates for v5.12 2021-02-22 09:16:38 -08:00
configs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2021-02-23 14:52:22 -08:00
crypto crypto: arm64/crc-t10dif - move NEON yield to C code 2021-02-10 17:55:58 +11:00
include KVM: arm64: Allow using kvm_nvhe_sym() in hyp code 2021-03-19 12:01:20 +00:00
kernel KVM: arm64: Introduce a BSS section for use at Hyp 2021-03-19 12:01:20 +00:00
kvm KVM: arm64: Introduce an early Hyp page allocator 2021-03-19 12:01:20 +00:00
lib arm64: lib: Annotate {clear, copy}_page() as position-independent 2021-03-19 12:01:19 +00:00
mm arm64: mm: use a 48-bit ID map when possible on 52-bit VA builds 2021-03-11 13:04:28 +00:00
net bpf: Rename BPF_XADD and prepare to encode other atomics in .imm 2021-01-14 18:34:29 -08:00
xen
Kbuild
Kconfig Linux 5.12-rc3 2021-03-19 12:01:04 +00:00
Kconfig.debug
Kconfig.platforms Updates for the irq subsystem: 2021-02-21 11:53:06 -08:00
Makefile arm64: do not descend to vdso directories twice 2021-01-20 12:18:46 +00:00