lkml.org 
[lkml]   [2021]   [Mar]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
Subject[PATCH 0/2] Fixes for FWB
From
Hi folks,

This is an alternative solution to the KVM_PGTABLE_PROT_S2_NOFWB patch I
shared earlier (and which is a bit of a hack).

With this series we basically force FWB off for the host stage-2, even
when the CPUs support it. This is done by passing flags to the pgtable
init function, and propagating it down where needed. It's a bit more
intrusive, but cleaner conceptually.

Thoughts?

Thanks,
Quentin

Quentin Perret (2):
KVM: arm64: Introduce KVM_PGTABLE_S2_NOFWB Stage-2 flag
KVM: arm64: Disable FWB in host stage-2

arch/arm64/include/asm/kvm_pgtable.h | 19 +++++++++--
arch/arm64/include/asm/pgtable-prot.h | 4 +--
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 6 ++--
arch/arm64/kvm/hyp/pgtable.c | 49 +++++++++++++++++----------
4 files changed, 52 insertions(+), 26 deletions(-)

--
2.31.0.rc2.261.g7f71774620-goog

\
 
 \ /
  Last update: 2021-03-17 15:19    [W:0.394 / U:26.968 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site