@@ -86,9 +86,11 @@ Translation table lookup with 64KB pages:
+-------------------------------------------------> [63] TTBR0/1
-When using KVM without the Virtualization Host Extensions, the hypervisor
-maps kernel pages in EL2 at a fixed offset from the kernel VA. See the
-kern_hyp_va macro for more details.
+When using KVM without the Virtualization Host Extensions, the
+hypervisor maps kernel pages in EL2 at a fixed offset (modulo a random
+offset) from the linear mapping. See the kern_hyp_va macro and
+kvm_update_va_mask function for more details. MMIO devices such as
+GICv2 gets mapped next to the HYP idmap page.
When using KVM with the Virtualization Host Extensions, no additional
mappings are created, since the host kernel runs directly in EL2.
Update the documentation to reflect the new tricks we play on the EL2 mappings... Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> --- Documentation/arm64/memory.txt | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)