From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Fedin Subject: [PATCH v5 0/2] KVM: arm/arm64: Allow to use KVM without in-kernel irqchip Date: Mon, 30 Nov 2015 12:40:43 +0300 Message-ID: Return-path: Sender: kvm-owner@vger.kernel.org To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Cc: Marc Zyngier , Christoffer Dall , Gleb Natapov , Paolo Bonzini List-Id: kvmarm@lists.cs.columbia.edu This patch set brings back functionality which was broken in v4.0. Unfortunately, currently it is impossible to take advantage of virtual architected timer in this case, therefore guest, running in such restricted mode, has to use some memory-mapped timer. But it is still better than nothing. Patch 0002 needs to be verified on PowerPC architecture, because i've got an impression that KVM_CAP_IRQCHIP is forgotten there. v4 => v5: - Tested on top of kvmarm/next - Dropped already applied part - Fixed minor checkpatch issues v3 => v4: - Revert back to using switch on kvm_vgic_hyp_init() return code. I decided to leave 'vgic_present = false' statement because it helps to understand the code. v2 => v3: - Improved commit messages, added references to commits where the respective functionality was broken - Explicitly specify that the solution currently affects only vGIC and has nothing to do with timer. - Fixed code style according to previous notes - Removed ARM64 save/restore patch introduced in v2 because it was already obsolete for linux-next - Modify KVM_CAP_IRQFD handling in correct place v1 => v2: - Do not use defensive approach in patch 0001. Use correct conditions in callers instead - Added ARM64-specific code, without which attempt to run a VM ends in a HYP crash because of unset vGIC save/restore function pointers Pavel Fedin (2): arm/arm64: KVM: Detect vGIC presence at runtime KVM: Make KVM_CAP_IRQFD dependent on KVM_CAP_IRQCHIP arch/arm/kvm/arm.c | 22 ++++++++++++++++++++-- virt/kvm/kvm_main.c | 6 ++++-- 2 files changed, 24 insertions(+), 4 deletions(-) -- 2.4.4