lkml.org 
[lkml]   [2020]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v1 04/24] kvm: arm64: Initialize MAIR_EL2 using a constant
Date
MAIR_EL2 is currently initialized to the value of MAIR_EL1, which itself
is set to a constant MAIR_EL1_SET.

Initialize MAIR_EL2 to the MAIR_EL1_SET constant directly in preparation
of allowing KVM to start CPU cores itself and not initializing itself
before ERETing to EL1. In that case, MAIR_EL2 will be initialized before
MAIR_EL1.

Signed-off-by: David Brazdil <dbrazdil@google.com>
---
arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
index b11a9d7db677..96e70f976ff5 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
@@ -111,7 +111,7 @@ alternative_else_nop_endif

msr tcr_el2, x0

- mrs x0, mair_el1
+ mov_q x0, MAIR_EL1_SET
msr mair_el2, x0
isb

--
2.29.2.222.g5d2a92d10f8-goog
\
 
 \ /
  Last update: 2020-11-09 12:37    [W:0.531 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site