From mboxrd@z Thu Jan 1 00:00:00 1970 From: mbrugger@suse.com (Matthias Brugger) Date: Thu, 4 Aug 2016 11:15:16 +0200 Subject: [PATCH 3/4] KVM: arm/arm64: Check for broadcast TLBI support In-Reply-To: <1470302117-32296-1-git-send-email-mbrugger@suse.com> References: <1470302117-32296-1-git-send-email-mbrugger@suse.com> Message-ID: <1470302117-32296-4-git-send-email-mbrugger@suse.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org KVM awaits a working broadcast TLBI implementation. Error out early when this is not provided by the hardware. Signed-off-by: Matthias Brugger --- arch/arm/kvm/arm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index f1bde7c..e627fac 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -1376,6 +1376,11 @@ int kvm_arch_init(void *opaque) int err; int ret, cpu; + if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) { + kvm_err("Missing broadcast TLBI support.\n"); + return -ENODEV; + } + if (!is_hyp_mode_available()) { kvm_err("HYP mode not available\n"); return -ENODEV; -- 2.6.6