From: "Cédric Le Goater" <clg@kaod.org> To: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org, "Paul Mackerras" <paulus@samba.org>, "Cédric Le Goater" <clg@kaod.org>, linuxppc-dev@lists.ozlabs.org, "David Gibson" <david@gibson.dropbear.id.au> Subject: [PATCH v4 08/17] KVM: PPC: Book3S HV: XIVE: add a control to sync the sources Date: Wed, 20 Mar 2019 09:37:42 +0100 [thread overview] Message-ID: <20190320083751.27001-9-clg@kaod.org> (raw) In-Reply-To: <20190320083751.27001-1-clg@kaod.org> This control will be used by the H_INT_SYNC hcall from QEMU to flush event notifications on the XIVE IC owning the source. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> --- Changes since v2 : - fixed locking on source block arch/powerpc/include/uapi/asm/kvm.h | 1 + arch/powerpc/kvm/book3s_xive_native.c | 36 ++++++++++++++++++++++ Documentation/virtual/kvm/devices/xive.txt | 8 +++++ 3 files changed, 45 insertions(+) diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index f045f9dee42e..e4abe30f6fc6 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -683,6 +683,7 @@ struct kvm_ppc_cpu_char { #define KVM_DEV_XIVE_GRP_SOURCE 2 /* 64-bit source identifier */ #define KVM_DEV_XIVE_GRP_SOURCE_CONFIG 3 /* 64-bit source identifier */ #define KVM_DEV_XIVE_GRP_EQ_CONFIG 4 /* 64-bit EQ identifier */ +#define KVM_DEV_XIVE_GRP_SOURCE_SYNC 5 /* 64-bit source identifier */ /* Layout of 64-bit XIVE source attribute values */ #define KVM_XIVE_LEVEL_SENSITIVE (1ULL << 0) diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c index b54d6fa978fe..d45dc2ec0557 100644 --- a/arch/powerpc/kvm/book3s_xive_native.c +++ b/arch/powerpc/kvm/book3s_xive_native.c @@ -335,6 +335,38 @@ static int kvmppc_xive_native_set_source_config(struct kvmppc_xive *xive, priority, masked, eisn); } +static int kvmppc_xive_native_sync_source(struct kvmppc_xive *xive, + long irq, u64 addr) +{ + struct kvmppc_xive_src_block *sb; + struct kvmppc_xive_irq_state *state; + struct xive_irq_data *xd; + u32 hw_num; + u16 src; + int rc = 0; + + pr_devel("%s irq=0x%lx", __func__, irq); + + sb = kvmppc_xive_find_source(xive, irq, &src); + if (!sb) + return -ENOENT; + + state = &sb->irq_state[src]; + + rc = -EINVAL; + + arch_spin_lock(&sb->lock); + + if (state->valid) { + kvmppc_xive_select_irq(state, &hw_num, &xd); + xive_native_sync_source(hw_num); + rc = 0; + } + + arch_spin_unlock(&sb->lock); + return rc; +} + static int xive_native_validate_queue_size(u32 qshift) { /* @@ -663,6 +695,9 @@ static int kvmppc_xive_native_set_attr(struct kvm_device *dev, case KVM_DEV_XIVE_GRP_EQ_CONFIG: return kvmppc_xive_native_set_queue_config(xive, attr->attr, attr->addr); + case KVM_DEV_XIVE_GRP_SOURCE_SYNC: + return kvmppc_xive_native_sync_source(xive, attr->attr, + attr->addr); } return -ENXIO; } @@ -692,6 +727,7 @@ static int kvmppc_xive_native_has_attr(struct kvm_device *dev, break; case KVM_DEV_XIVE_GRP_SOURCE: case KVM_DEV_XIVE_GRP_SOURCE_CONFIG: + case KVM_DEV_XIVE_GRP_SOURCE_SYNC: if (attr->attr >= KVMPPC_XIVE_FIRST_IRQ && attr->attr < KVMPPC_XIVE_NR_IRQS) return 0; diff --git a/Documentation/virtual/kvm/devices/xive.txt b/Documentation/virtual/kvm/devices/xive.txt index acd5cb9d1339..26fc918b02fb 100644 --- a/Documentation/virtual/kvm/devices/xive.txt +++ b/Documentation/virtual/kvm/devices/xive.txt @@ -92,3 +92,11 @@ the legacy interrupt mode, referred as XICS (POWER7/8). -EINVAL: Invalid queue address -EFAULT: Invalid user pointer for attr->addr. -EIO: Configuration of the underlying HW failed + + 5. KVM_DEV_XIVE_GRP_SOURCE_SYNC (write only) + Synchronize the source to flush event notifications + Attributes: + Interrupt source number (64-bit) + Errors: + -ENOENT: Unknown source number + -EINVAL: Not initialized source number -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: "Cédric Le Goater" <clg@kaod.org> To: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org, "Paul Mackerras" <paulus@samba.org>, "Cédric Le Goater" <clg@kaod.org>, linuxppc-dev@lists.ozlabs.org, "David Gibson" <david@gibson.dropbear.id.au> Subject: [PATCH v4 08/17] KVM: PPC: Book3S HV: XIVE: add a control to sync the sources Date: Wed, 20 Mar 2019 08:37:42 +0000 [thread overview] Message-ID: <20190320083751.27001-9-clg@kaod.org> (raw) In-Reply-To: <20190320083751.27001-1-clg@kaod.org> This control will be used by the H_INT_SYNC hcall from QEMU to flush event notifications on the XIVE IC owning the source. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> --- Changes since v2 : - fixed locking on source block arch/powerpc/include/uapi/asm/kvm.h | 1 + arch/powerpc/kvm/book3s_xive_native.c | 36 ++++++++++++++++++++++ Documentation/virtual/kvm/devices/xive.txt | 8 +++++ 3 files changed, 45 insertions(+) diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index f045f9dee42e..e4abe30f6fc6 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -683,6 +683,7 @@ struct kvm_ppc_cpu_char { #define KVM_DEV_XIVE_GRP_SOURCE 2 /* 64-bit source identifier */ #define KVM_DEV_XIVE_GRP_SOURCE_CONFIG 3 /* 64-bit source identifier */ #define KVM_DEV_XIVE_GRP_EQ_CONFIG 4 /* 64-bit EQ identifier */ +#define KVM_DEV_XIVE_GRP_SOURCE_SYNC 5 /* 64-bit source identifier */ /* Layout of 64-bit XIVE source attribute values */ #define KVM_XIVE_LEVEL_SENSITIVE (1ULL << 0) diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c index b54d6fa978fe..d45dc2ec0557 100644 --- a/arch/powerpc/kvm/book3s_xive_native.c +++ b/arch/powerpc/kvm/book3s_xive_native.c @@ -335,6 +335,38 @@ static int kvmppc_xive_native_set_source_config(struct kvmppc_xive *xive, priority, masked, eisn); } +static int kvmppc_xive_native_sync_source(struct kvmppc_xive *xive, + long irq, u64 addr) +{ + struct kvmppc_xive_src_block *sb; + struct kvmppc_xive_irq_state *state; + struct xive_irq_data *xd; + u32 hw_num; + u16 src; + int rc = 0; + + pr_devel("%s irq=0x%lx", __func__, irq); + + sb = kvmppc_xive_find_source(xive, irq, &src); + if (!sb) + return -ENOENT; + + state = &sb->irq_state[src]; + + rc = -EINVAL; + + arch_spin_lock(&sb->lock); + + if (state->valid) { + kvmppc_xive_select_irq(state, &hw_num, &xd); + xive_native_sync_source(hw_num); + rc = 0; + } + + arch_spin_unlock(&sb->lock); + return rc; +} + static int xive_native_validate_queue_size(u32 qshift) { /* @@ -663,6 +695,9 @@ static int kvmppc_xive_native_set_attr(struct kvm_device *dev, case KVM_DEV_XIVE_GRP_EQ_CONFIG: return kvmppc_xive_native_set_queue_config(xive, attr->attr, attr->addr); + case KVM_DEV_XIVE_GRP_SOURCE_SYNC: + return kvmppc_xive_native_sync_source(xive, attr->attr, + attr->addr); } return -ENXIO; } @@ -692,6 +727,7 @@ static int kvmppc_xive_native_has_attr(struct kvm_device *dev, break; case KVM_DEV_XIVE_GRP_SOURCE: case KVM_DEV_XIVE_GRP_SOURCE_CONFIG: + case KVM_DEV_XIVE_GRP_SOURCE_SYNC: if (attr->attr >= KVMPPC_XIVE_FIRST_IRQ && attr->attr < KVMPPC_XIVE_NR_IRQS) return 0; diff --git a/Documentation/virtual/kvm/devices/xive.txt b/Documentation/virtual/kvm/devices/xive.txt index acd5cb9d1339..26fc918b02fb 100644 --- a/Documentation/virtual/kvm/devices/xive.txt +++ b/Documentation/virtual/kvm/devices/xive.txt @@ -92,3 +92,11 @@ the legacy interrupt mode, referred as XICS (POWER7/8). -EINVAL: Invalid queue address -EFAULT: Invalid user pointer for attr->addr. -EIO: Configuration of the underlying HW failed + + 5. KVM_DEV_XIVE_GRP_SOURCE_SYNC (write only) + Synchronize the source to flush event notifications + Attributes: + Interrupt source number (64-bit) + Errors: + -ENOENT: Unknown source number + -EINVAL: Not initialized source number -- 2.20.1
next prev parent reply other threads:[~2019-03-20 8:37 UTC|newest] Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-20 8:37 [PATCH v4 00/17] KVM: PPC: Book3S HV: add XIVE native exploitation mode Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 01/17] powerpc/xive: add OPAL extensions for the XIVE native exploitation support Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 02/17] KVM: PPC: Book3S HV: add a new KVM device for the XIVE native exploitation mode Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 03/17] KVM: PPC: Book3S HV: XIVE: introduce a new capability KVM_CAP_PPC_IRQ_XIVE Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 04/17] KVM: PPC: Book3S HV: XIVE: add a control to initialize a source Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 05/17] KVM: PPC: Book3S HV: XIVE: add a control to configure " Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 06/17] KVM: PPC: Book3S HV: XIVE: add controls for the EQ configuration Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 23:09 ` David Gibson 2019-03-20 23:09 ` David Gibson 2019-03-21 8:48 ` Cédric Le Goater 2019-03-21 8:48 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 07/17] KVM: PPC: Book3S HV: XIVE: add a global reset control Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater [this message] 2019-03-20 8:37 ` [PATCH v4 08/17] KVM: PPC: Book3S HV: XIVE: add a control to sync the sources Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 09/17] KVM: PPC: Book3S HV: XIVE: add a control to dirty the XIVE EQ pages Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 10/17] KVM: PPC: Book3S HV: XIVE: add get/set accessors for the VP XIVE state Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-04-09 6:19 ` Paul Mackerras 2019-04-09 6:19 ` Paul Mackerras 2019-04-09 6:19 ` Paul Mackerras 2019-04-09 9:18 ` Cédric Le Goater 2019-04-09 9:18 ` Cédric Le Goater 2019-04-09 9:18 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 11/17] KVM: introduce a 'mmap' method for KVM devices Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 12/17] KVM: PPC: Book3S HV: XIVE: add a TIMA mapping Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 13/17] KVM: PPC: Book3S HV: XIVE: add a mapping for the source ESB pages Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 14/17] KVM: PPC: Book3S HV: XIVE: add passthrough support Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 15/17] KVM: PPC: Book3S HV: XIVE: activate XIVE exploitation mode Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 16/17] KVM: introduce a KVM_DESTROY_DEVICE ioctl Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-04-09 14:12 ` Cédric Le Goater 2019-04-09 14:12 ` Cédric Le Goater 2019-04-09 14:12 ` Cédric Le Goater 2019-03-20 8:37 ` [PATCH v4 17/17] KVM: PPC: Book3S HV: XIVE: clear the vCPU interrupt presenters Cédric Le Goater 2019-03-20 8:37 ` Cédric Le Goater 2019-04-09 14:13 ` [RFC PATCH v4.1 16/17] KVM: PPC: Book3S HV: XIVE: introduce a xive_devices array under the VM Cédric Le Goater 2019-04-09 14:13 ` Cédric Le Goater 2019-04-09 14:13 ` [RFC PATCH v4 17/17] KVM: PPC: Book3S HV: XIVE: introduce a 'release' device operation Cédric Le Goater 2019-04-09 14:13 ` Cédric Le Goater 2019-04-15 3:32 ` David Gibson 2019-04-15 3:32 ` David Gibson 2019-04-15 9:25 ` Paul Mackerras 2019-04-15 9:25 ` Paul Mackerras 2019-04-15 13:56 ` Cédric Le Goater 2019-04-15 13:56 ` Cédric Le Goater 2019-04-15 13:48 ` Cédric Le Goater 2019-04-15 13:48 ` Cédric Le Goater 2019-04-17 2:05 ` David Gibson 2019-04-17 2:05 ` David Gibson 2019-04-15 3:26 ` [RFC PATCH v4.1 16/17] KVM: PPC: Book3S HV: XIVE: introduce a xive_devices array under the VM David Gibson 2019-04-15 3:26 ` David Gibson
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