From: Alexander Graf <agraf@suse.de>
To: kvm-ppc@vger.kernel.org
Cc: "kvm@vger.kernel.org mailing list" <kvm@vger.kernel.org>,
Marcelo Tosatti <mtosatti@redhat.com>,
Gleb Natapov <gleb@redhat.com>,
Scott Wood <scottwood@freescale.com>
Subject: [PATCH 35/42] kvm/ppc/mpic: Eliminate mmio_mapped
Date: Fri, 26 Apr 2013 20:30:30 +0200 [thread overview]
Message-ID: <1367001037-10394-57-git-send-email-agraf@suse.de> (raw)
In-Reply-To: <1367001037-10394-1-git-send-email-agraf@suse.de>
From: Scott Wood <scottwood@freescale.com>
We no longer need to keep track of this now that MPIC destruction
always happens either during VM destruction (after MMIO has been
destroyed) or during a failed creation (before the fd has been exposed
to userspace, and thus before the MMIO region could have been
registered).
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
arch/powerpc/kvm/mpic.c | 29 +----------------------------
1 files changed, 1 insertions(+), 28 deletions(-)
diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c
index 795ca0c..f3148f8 100644
--- a/arch/powerpc/kvm/mpic.c
+++ b/arch/powerpc/kvm/mpic.c
@@ -190,7 +190,6 @@ struct openpic {
struct kvm_io_device mmio;
struct list_head mmio_regions;
atomic_t users;
- bool mmio_mapped;
gpa_t reg_base;
spinlock_t lock;
@@ -1428,24 +1427,13 @@ static int kvm_mpic_write(struct kvm_io_device *this, gpa_t addr,
return ret;
}
-static void kvm_mpic_dtor(struct kvm_io_device *this)
-{
- struct openpic *opp = container_of(this, struct openpic, mmio);
-
- opp->mmio_mapped = false;
-}
-
static const struct kvm_io_device_ops mpic_mmio_ops = {
.read = kvm_mpic_read,
.write = kvm_mpic_write,
- .destructor = kvm_mpic_dtor,
};
static void map_mmio(struct openpic *opp)
{
- BUG_ON(opp->mmio_mapped);
- opp->mmio_mapped = true;
-
kvm_iodevice_init(&opp->mmio, &mpic_mmio_ops);
kvm_io_bus_register_dev(opp->kvm, KVM_MMIO_BUS,
@@ -1455,10 +1443,7 @@ static void map_mmio(struct openpic *opp)
static void unmap_mmio(struct openpic *opp)
{
- if (opp->mmio_mapped) {
- opp->mmio_mapped = false;
- kvm_io_bus_unregister_dev(opp->kvm, KVM_MMIO_BUS, &opp->mmio);
- }
+ kvm_io_bus_unregister_dev(opp->kvm, KVM_MMIO_BUS, &opp->mmio);
}
static int set_base_addr(struct openpic *opp, struct kvm_device_attr *attr)
@@ -1637,18 +1622,6 @@ static void mpic_destroy(struct kvm_device *dev)
{
struct openpic *opp = dev->private;
- if (opp->mmio_mapped) {
- /*
- * Normally we get unmapped by kvm_io_bus_destroy(),
- * which happens before the VCPUs release their references.
- *
- * Thus, we should only get here if no VCPUs took a reference
- * to us in the first place.
- */
- WARN_ON(opp->nb_cpus != 0);
- unmap_mmio(opp);
- }
-
dev->kvm->arch.mpic = NULL;
kfree(opp);
}
--
1.6.0.2
WARNING: multiple messages have this Message-ID (diff)
From: Alexander Graf <agraf@suse.de>
To: kvm-ppc@vger.kernel.org
Cc: "kvm@vger.kernel.org mailing list" <kvm@vger.kernel.org>,
Marcelo Tosatti <mtosatti@redhat.com>,
Gleb Natapov <gleb@redhat.com>,
Scott Wood <scottwood@freescale.com>
Subject: [PATCH 35/42] kvm/ppc/mpic: Eliminate mmio_mapped
Date: Fri, 26 Apr 2013 18:30:30 +0000 [thread overview]
Message-ID: <1367001037-10394-57-git-send-email-agraf@suse.de> (raw)
In-Reply-To: <1367001037-10394-1-git-send-email-agraf@suse.de>
From: Scott Wood <scottwood@freescale.com>
We no longer need to keep track of this now that MPIC destruction
always happens either during VM destruction (after MMIO has been
destroyed) or during a failed creation (before the fd has been exposed
to userspace, and thus before the MMIO region could have been
registered).
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
arch/powerpc/kvm/mpic.c | 29 +----------------------------
1 files changed, 1 insertions(+), 28 deletions(-)
diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c
index 795ca0c..f3148f8 100644
--- a/arch/powerpc/kvm/mpic.c
+++ b/arch/powerpc/kvm/mpic.c
@@ -190,7 +190,6 @@ struct openpic {
struct kvm_io_device mmio;
struct list_head mmio_regions;
atomic_t users;
- bool mmio_mapped;
gpa_t reg_base;
spinlock_t lock;
@@ -1428,24 +1427,13 @@ static int kvm_mpic_write(struct kvm_io_device *this, gpa_t addr,
return ret;
}
-static void kvm_mpic_dtor(struct kvm_io_device *this)
-{
- struct openpic *opp = container_of(this, struct openpic, mmio);
-
- opp->mmio_mapped = false;
-}
-
static const struct kvm_io_device_ops mpic_mmio_ops = {
.read = kvm_mpic_read,
.write = kvm_mpic_write,
- .destructor = kvm_mpic_dtor,
};
static void map_mmio(struct openpic *opp)
{
- BUG_ON(opp->mmio_mapped);
- opp->mmio_mapped = true;
-
kvm_iodevice_init(&opp->mmio, &mpic_mmio_ops);
kvm_io_bus_register_dev(opp->kvm, KVM_MMIO_BUS,
@@ -1455,10 +1443,7 @@ static void map_mmio(struct openpic *opp)
static void unmap_mmio(struct openpic *opp)
{
- if (opp->mmio_mapped) {
- opp->mmio_mapped = false;
- kvm_io_bus_unregister_dev(opp->kvm, KVM_MMIO_BUS, &opp->mmio);
- }
+ kvm_io_bus_unregister_dev(opp->kvm, KVM_MMIO_BUS, &opp->mmio);
}
static int set_base_addr(struct openpic *opp, struct kvm_device_attr *attr)
@@ -1637,18 +1622,6 @@ static void mpic_destroy(struct kvm_device *dev)
{
struct openpic *opp = dev->private;
- if (opp->mmio_mapped) {
- /*
- * Normally we get unmapped by kvm_io_bus_destroy(),
- * which happens before the VCPUs release their references.
- *
- * Thus, we should only get here if no VCPUs took a reference
- * to us in the first place.
- */
- WARN_ON(opp->nb_cpus != 0);
- unmap_mmio(opp);
- }
-
dev->kvm->arch.mpic = NULL;
kfree(opp);
}
--
1.6.0.2
next prev parent reply other threads:[~2013-04-26 18:30 UTC|newest]
Thread overview: 180+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-26 18:29 [PATCH 00/20] KVM: PPC: In-kernel MPIC support with irqfd v4 Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 01/20] KVM: Add KVM_IRQCHIP_NUM_PINS in addition to KVM_IOAPIC_NUM_PINS Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 02/20] KVM: Introduce CONFIG_HAVE_KVM_IRQ_ROUTING Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 03/20] KVM: Drop __KVM_HAVE_IOAPIC condition on irq routing Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 04/20] KVM: Remove kvm_get_intr_delivery_bitmask Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 05/20] KVM: Move irq routing to generic code Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 06/20] KVM: Extract generic irqchip logic into irqchip.c Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 07/20] KVM: Move irq routing setup to irqchip.c Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 08/20] KVM: Move irqfd resample cap handling to generic code Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 09/20] kvm: add device control API Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 10/20] kvm/ppc/mpic: import hw/openpic.c from QEMU Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 11/20] kvm/ppc/mpic: remove some obviously unneeded code Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 12/20] kvm/ppc/mpic: adapt to kernel style and environment Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 13/20] kvm/ppc/mpic: in-kernel MPIC emulation Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 14/20] kvm/ppc/mpic: add KVM_CAP_IRQ_MPIC Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 15/20] KVM: PPC: Support irq routing and irqfd for in-kernel MPIC Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 16/20] KVM: PPC: MPIC: Add support for KVM_IRQ_LINE Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 17/20] KVM: PPC: MPIC: Restrict to e500 platforms Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 18/20] KVM: IA64: Carry non-ia64 changes into ia64 Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 19/20] kvm: destroy emulated devices on VM exit Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 20/20] kvm/ppc/mpic: Eliminate mmio_mapped Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PULL 00/42] ppc patch queue 2013-04-26 for 3.10 Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-28 10:05 ` Gleb Natapov
2013-04-28 10:05 ` Gleb Natapov
2013-04-26 18:29 ` [PATCH 01/42] KVM: PPC: cache flush for kernel managed pages Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 02/42] KVM: PPC: debug stub interface parameter defined Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 03/42] Rename EMULATE_DO_PAPR to EMULATE_EXIT_USER Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:29 ` [PATCH 04/42] KVM: extend EMULATE_EXIT_USER to support different exit reasons Alexander Graf
2013-04-26 18:29 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 05/42] booke: exit to user space if emulator request Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 06/42] KVM: PPC: Book3E: Refactor ONE_REG ioctl implementation Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 07/42] KVM: PPC: e500: Expose MMU registers via ONE_REG Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 08/42] KVM: PPC: e500: Move vcpu's MMU configuration to dedicated functions Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 09/42] KVM: PPC: e500: Add support for TLBnPS registers Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 10/42] KVM: PPC: e500: Add support for EPTCFG register Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 11/42] KVM: PPC: e500: Remove E.PT and E.HV.LRAT categories from VCPUs Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 12/42] KVM: PPC: e500mc: Enable e6500 cores Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 13/42] KVM: PPC: e500: Add e6500 core to Kconfig description Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 14/42] KVM: PPC: Book3S HV: Make HPT reading code notice R/C bit changes Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 15/42] KVM: PPC: Book3S HV: Report VPA and DTL modifications in dirty map Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 16/42] KVM: Add KVM_IRQCHIP_NUM_PINS in addition to KVM_IOAPIC_NUM_PINS Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-28 5:41 ` Gleb Natapov
2013-04-28 5:41 ` Gleb Natapov
2013-04-28 9:46 ` Alexander Graf
2013-04-28 9:46 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 17/42] KVM: Introduce CONFIG_HAVE_KVM_IRQ_ROUTING Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 18/42] KVM: Drop __KVM_HAVE_IOAPIC condition on irq routing Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 19/42] KVM: Remove kvm_get_intr_delivery_bitmask Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 20/42] KVM: Move irq routing to generic code Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 21/42] KVM: Extract generic irqchip logic into irqchip.c Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 22/42] KVM: Move irq routing setup to irqchip.c Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 23/42] KVM: Move irqfd resample cap handling to generic code Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 24/42] kvm: add device control API Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 25/42] kvm/ppc/mpic: import hw/openpic.c from QEMU Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 26/42] kvm/ppc/mpic: remove some obviously unneeded code Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 27/42] kvm/ppc/mpic: adapt to kernel style and environment Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 28/42] kvm/ppc/mpic: in-kernel MPIC emulation Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 29/42] kvm/ppc/mpic: add KVM_CAP_IRQ_MPIC Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 30/42] KVM: PPC: Support irq routing and irqfd for in-kernel MPIC Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 31/42] KVM: PPC: MPIC: Add support for KVM_IRQ_LINE Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 32/42] KVM: PPC: MPIC: Restrict to e500 platforms Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 33/42] KVM: IA64: Carry non-ia64 changes into ia64 Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 34/42] kvm: destroy emulated devices on VM exit Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-28 5:43 ` Gleb Natapov
2013-04-28 5:43 ` Gleb Natapov
2013-04-28 9:47 ` Alexander Graf
2013-04-28 9:47 ` Alexander Graf
2013-04-26 18:30 ` Alexander Graf [this message]
2013-04-26 18:30 ` [PATCH 35/42] kvm/ppc/mpic: Eliminate mmio_mapped Alexander Graf
2013-04-26 18:30 ` [PATCH 36/42] KVM: PPC: Book3S: Add infrastructure to implement kernel-side RTAS calls Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 37/42] KVM: PPC: Book3S: Add kernel emulation for the XICS interrupt controller Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 38/42] KVM: PPC: Book3S HV: Speed up wakeups of CPUs on HV KVM Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 39/42] KVM: PPC: Book3S HV: Add support for real mode ICP in XICS emulation Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 40/42] KVM: PPC: Book3S HV: Improve real-mode handling of external interrupts Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 41/42] KVM: PPC: Book3S: Add support for ibm,int-on/off RTAS calls Alexander Graf
2013-04-26 18:30 ` Alexander Graf
2013-04-26 18:30 ` [PATCH 42/42] KVM: PPC: Book3S: Facilities to save/restore XICS presentation ctrler state Alexander Graf
2013-04-26 18:30 ` Alexander Graf
-- strict thread matches above, loose matches on Subject: below --
2013-04-26 8:24 [PATCH 00/20] KVM: PPC: In-kernel MPIC support with irqfd v4 Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 01/20] KVM: Add KVM_IRQCHIP_NUM_PINS in addition to KVM_IOAPIC_NUM_PINS Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 02/20] KVM: Introduce CONFIG_HAVE_KVM_IRQ_ROUTING Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 03/20] KVM: Drop __KVM_HAVE_IOAPIC condition on irq routing Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 04/20] KVM: Remove kvm_get_intr_delivery_bitmask Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 05/20] KVM: Move irq routing to generic code Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 06/20] KVM: Extract generic irqchip logic into irqchip.c Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 07/20] KVM: Move irq routing setup to irqchip.c Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 08/20] KVM: Move irqfd resample cap handling to generic code Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 09/20] kvm: add device control API Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 10/20] kvm/ppc/mpic: import hw/openpic.c from QEMU Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 11/20] kvm/ppc/mpic: remove some obviously unneeded code Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 12/20] kvm/ppc/mpic: adapt to kernel style and environment Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 13/20] kvm/ppc/mpic: in-kernel MPIC emulation Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 14/20] kvm/ppc/mpic: add KVM_CAP_IRQ_MPIC Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 15/20] KVM: PPC: Support irq routing and irqfd for in-kernel MPIC Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 16/20] KVM: PPC: MPIC: Add support for KVM_IRQ_LINE Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 17/20] KVM: PPC: MPIC: Restrict to e500 platforms Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 18/20] KVM: IA64: Carry non-ia64 changes into ia64 Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 19/20] kvm: destroy emulated devices on VM exit Alexander Graf
2013-04-26 8:24 ` Alexander Graf
2013-04-26 8:24 ` [PATCH 20/20] kvm/ppc/mpic: Eliminate mmio_mapped Alexander Graf
2013-04-26 8:24 ` Alexander Graf
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