[PATCH 70/85] arm64: Update the KVM memory map documentation

[Marc Zyngier]

Update the documentation to reflect the new tricks we play on the
EL2 mappings...

Acked-by: Christoffer Dall <christoffer.dall at linaro.org>
Acked-by: Catalin Marinas <catalin.marinas at arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
---
 Documentation/arm64/memory.txt | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/arm64/memory.txt b/Documentation/arm64/memory.txt
index 671bc0639262..c58cc5dbe667 100644
--- a/Documentation/arm64/memory.txt
+++ b/Documentation/arm64/memory.txt
@@ -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 (and potentially
+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.
-- 
2.14.2