From 4e755758cbbeb0afe44556c1ce52ea6f590ed5bf Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Fri, 30 Oct 2009 05:47:01 +0000 Subject: Move dirty logging code to sub-arch PowerPC code handles dirty logging in the generic parts atm. While this is great for "return -ENOTSUPP", we need to be rather target specific when actually implementing it. So let's split it to implementation specific code, so we can implement it for book3s. Signed-off-by: Alexander Graf Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kvm/powerpc.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch/powerpc/kvm/powerpc.c') diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 2a4551f..a06ecc3 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -409,11 +409,6 @@ out: return r; } -int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) -{ - return -ENOTSUPP; -} - long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { -- cgit v1.1 From 544c6761bb05a1dd19a39cb9bed096273f9bdb36 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 2 Nov 2009 12:02:31 +0000 Subject: Use hrtimers for the decrementer Following S390's good example we should use hrtimers for the decrementer too! This patch converts the timer from the old mechanism to hrtimers. Signed-off-by: Alexander Graf Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kvm/powerpc.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/kvm/powerpc.c') diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index a06ecc3..692c370 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -208,10 +209,25 @@ static void kvmppc_decrementer_func(unsigned long data) } } +/* + * low level hrtimer wake routine. Because this runs in hardirq context + * we schedule a tasklet to do the real work. + */ +enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) +{ + struct kvm_vcpu *vcpu; + + vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); + tasklet_schedule(&vcpu->arch.tasklet); + + return HRTIMER_NORESTART; +} + int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) { - setup_timer(&vcpu->arch.dec_timer, kvmppc_decrementer_func, - (unsigned long)vcpu); + hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); + tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); + vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; return 0; } -- cgit v1.1 From e15a113700324f7fdcee95589875daed2b98a2fe Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 30 Nov 2009 03:02:02 +0000 Subject: powerpc/kvm: Sync guest visible MMU state Currently userspace has no chance to find out which virtual address space we're in and resolve addresses. While that is a big problem for migration, it's also unpleasent when debugging, as gdb and the monitor don't work on virtual addresses. This patch exports enough of the MMU segment state to userspace to make debugging work and thus also includes the groundwork for migration. Signed-off-by: Alexander Graf Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kvm/powerpc.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/powerpc/kvm/powerpc.c') diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 692c370..d82551e 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -144,6 +144,9 @@ int kvm_dev_ioctl_check_extension(long ext) int r; switch (ext) { + case KVM_CAP_PPC_SEGSTATE: + r = 1; + break; case KVM_CAP_COALESCED_MMIO: r = KVM_COALESCED_MMIO_PAGE_OFFSET; break; -- cgit v1.1