From: "Cédric Le Goater" <clg@kaod.org>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: kvm@vger.kernel.org, kvm-ppc@vger.kernel.org,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 15/19] KVM: PPC: Book3S HV: add get/set accessors for the source configuration
Date: Mon, 4 Feb 2019 17:07:28 +0100 [thread overview]
Message-ID: <02ee0470-3c6a-5c5c-a903-44e172ce1ed5@kaod.org> (raw)
In-Reply-To: <20190204052148.GH1927@umbus.fritz.box>
On 2/4/19 6:21 AM, David Gibson wrote:
> On Mon, Jan 07, 2019 at 07:43:27PM +0100, Cédric Le Goater wrote:
>> Theses are use to capure the XIVE EAS table of the KVM device, the
>> configuration of the source targets.
>>
>> Signed-off-by: Cédric Le Goater <clg@kaod.org>
>> ---
>> arch/powerpc/include/uapi/asm/kvm.h | 11 ++++
>> arch/powerpc/kvm/book3s_xive_native.c | 87 +++++++++++++++++++++++++++
>> 2 files changed, 98 insertions(+)
>>
>> diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h
>> index 1a8740629acf..faf024f39858 100644
>> --- a/arch/powerpc/include/uapi/asm/kvm.h
>> +++ b/arch/powerpc/include/uapi/asm/kvm.h
>> @@ -683,9 +683,20 @@ struct kvm_ppc_cpu_char {
>> #define KVM_DEV_XIVE_SAVE_EQ_PAGES 4
>> #define KVM_DEV_XIVE_GRP_SOURCES 2 /* 64-bit source attributes */
>> #define KVM_DEV_XIVE_GRP_SYNC 3 /* 64-bit source attributes */
>> +#define KVM_DEV_XIVE_GRP_EAS 4 /* 64-bit eas attributes */
>>
>> /* Layout of 64-bit XIVE source attribute values */
>> #define KVM_XIVE_LEVEL_SENSITIVE (1ULL << 0)
>> #define KVM_XIVE_LEVEL_ASSERTED (1ULL << 1)
>>
>> +/* Layout of 64-bit eas attribute values */
>> +#define KVM_XIVE_EAS_PRIORITY_SHIFT 0
>> +#define KVM_XIVE_EAS_PRIORITY_MASK 0x7
>> +#define KVM_XIVE_EAS_SERVER_SHIFT 3
>> +#define KVM_XIVE_EAS_SERVER_MASK 0xfffffff8ULL
>> +#define KVM_XIVE_EAS_MASK_SHIFT 32
>> +#define KVM_XIVE_EAS_MASK_MASK 0x100000000ULL
>> +#define KVM_XIVE_EAS_EISN_SHIFT 33
>> +#define KVM_XIVE_EAS_EISN_MASK 0xfffffffe00000000ULL
>> +
>> #endif /* __LINUX_KVM_POWERPC_H */
>> diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c
>> index f2de1bcf3b35..0468b605baa7 100644
>> --- a/arch/powerpc/kvm/book3s_xive_native.c
>> +++ b/arch/powerpc/kvm/book3s_xive_native.c
>> @@ -525,6 +525,88 @@ static int kvmppc_xive_native_sync(struct kvmppc_xive *xive, long irq, u64 addr)
>> return 0;
>> }
>>
>> +static int kvmppc_xive_native_set_eas(struct kvmppc_xive *xive, long irq,
>> + u64 addr)
>
> I'd prefer to avoid the name "EAS" here. IIUC these aren't "raw" EAS
> values, but rather essentially the "source config" in the terminology
> of the PAPR hcalls. Which, yes, is basically implemented by setting
> the EAS, but since it's the PAPR architected state that we need to
> preserve across migration, I'd prefer to stick as close as we can to
> the PAPR terminology.
But we don't have an equivalent name in the PAPR specs for the tuple
(prio, server). We could use the generic 'target' name may be ? even
if this is usually referring to a CPU number.
Or, IVE (Interrupt Vector Entry) ? which makes some sense.
This is was the former name in HW. I think we recycle it for KVM.
C.
>
>> +{
>> + struct kvmppc_xive_src_block *sb;
>> + struct kvmppc_xive_irq_state *state;
>> + u64 __user *ubufp = (u64 __user *) addr;
>> + u16 src;
>> + u64 kvm_eas;
>> + u32 server;
>> + u8 priority;
>> + u32 eisn;
>> +
>> + sb = kvmppc_xive_find_source(xive, irq, &src);
>> + if (!sb)
>> + return -ENOENT;
>> +
>> + state = &sb->irq_state[src];
>> +
>> + if (!state->valid)
>> + return -EINVAL;
>> +
>> + if (get_user(kvm_eas, ubufp))
>> + return -EFAULT;
>> +
>> + pr_devel("%s irq=0x%lx eas=%016llx\n", __func__, irq, kvm_eas);
>> +
>> + priority = (kvm_eas & KVM_XIVE_EAS_PRIORITY_MASK) >>
>> + KVM_XIVE_EAS_PRIORITY_SHIFT;
>> + server = (kvm_eas & KVM_XIVE_EAS_SERVER_MASK) >>
>> + KVM_XIVE_EAS_SERVER_SHIFT;
>> + eisn = (kvm_eas & KVM_XIVE_EAS_EISN_MASK) >> KVM_XIVE_EAS_EISN_SHIFT;
>> +
>> + if (priority != xive_prio_from_guest(priority)) {
>> + pr_err("invalid priority for queue %d for VCPU %d\n",
>> + priority, server);
>> + return -EINVAL;
>> + }
>> +
>> + return kvmppc_xive_native_set_source_config(xive, sb, state, server,
>> + priority, eisn);
>> +}
>> +
>> +static int kvmppc_xive_native_get_eas(struct kvmppc_xive *xive, long irq,
>> + u64 addr)
>> +{
>> + struct kvmppc_xive_src_block *sb;
>> + struct kvmppc_xive_irq_state *state;
>> + u64 __user *ubufp = (u64 __user *) addr;
>> + u16 src;
>> + u64 kvm_eas;
>> +
>> + sb = kvmppc_xive_find_source(xive, irq, &src);
>> + if (!sb)
>> + return -ENOENT;
>> +
>> + state = &sb->irq_state[src];
>> +
>> + if (!state->valid)
>> + return -EINVAL;
>> +
>> + arch_spin_lock(&sb->lock);
>> +
>> + if (state->act_priority == MASKED)
>> + kvm_eas = KVM_XIVE_EAS_MASK_MASK;
>> + else {
>> + kvm_eas = (state->act_priority << KVM_XIVE_EAS_PRIORITY_SHIFT) &
>> + KVM_XIVE_EAS_PRIORITY_MASK;
>> + kvm_eas |= (state->act_server << KVM_XIVE_EAS_SERVER_SHIFT) &
>> + KVM_XIVE_EAS_SERVER_MASK;
>> + kvm_eas |= ((u64) state->eisn << KVM_XIVE_EAS_EISN_SHIFT) &
>> + KVM_XIVE_EAS_EISN_MASK;
>> + }
>> + arch_spin_unlock(&sb->lock);
>> +
>> + pr_devel("%s irq=0x%lx eas=%016llx\n", __func__, irq, kvm_eas);
>> +
>> + if (put_user(kvm_eas, ubufp))
>> + return -EFAULT;
>> +
>> + return 0;
>> +}
>> +
>> static int kvmppc_xive_native_set_attr(struct kvm_device *dev,
>> struct kvm_device_attr *attr)
>> {
>> @@ -544,6 +626,8 @@ static int kvmppc_xive_native_set_attr(struct kvm_device *dev,
>> attr->addr);
>> case KVM_DEV_XIVE_GRP_SYNC:
>> return kvmppc_xive_native_sync(xive, attr->attr, attr->addr);
>> + case KVM_DEV_XIVE_GRP_EAS:
>> + return kvmppc_xive_native_set_eas(xive, attr->attr, attr->addr);
>> }
>> return -ENXIO;
>> }
>> @@ -564,6 +648,8 @@ static int kvmppc_xive_native_get_attr(struct kvm_device *dev,
>> return kvmppc_xive_native_get_vc_base(xive, attr->addr);
>> }
>> break;
>> + case KVM_DEV_XIVE_GRP_EAS:
>> + return kvmppc_xive_native_get_eas(xive, attr->attr, attr->addr);
>> }
>> return -ENXIO;
>> }
>> @@ -583,6 +669,7 @@ static int kvmppc_xive_native_has_attr(struct kvm_device *dev,
>> break;
>> case KVM_DEV_XIVE_GRP_SOURCES:
>> case KVM_DEV_XIVE_GRP_SYNC:
>> + case KVM_DEV_XIVE_GRP_EAS:
>> if (attr->attr >= KVMPPC_XIVE_FIRST_IRQ &&
>> attr->attr < KVMPPC_XIVE_NR_IRQS)
>> return 0;
>
next prev parent reply other threads:[~2019-02-04 16:18 UTC|newest]
Thread overview: 135+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-07 18:43 [PATCH 00/19] KVM: PPC: Book3S HV: add XIVE native exploitation mode Cédric Le Goater
2019-01-07 18:43 ` [PATCH 01/19] powerpc/xive: export flags for the XIVE native exploitation mode hcalls Cédric Le Goater
2019-01-09 3:33 ` David Gibson
2019-01-09 13:08 ` Michael Ellerman
2019-01-09 13:38 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 02/19] powerpc/xive: add OPAL extensions for the XIVE native exploitation support Cédric Le Goater
2019-01-09 4:26 ` David Gibson
2019-01-07 18:43 ` [PATCH 03/19] KVM: PPC: Book3S HV: check the IRQ controller type Cédric Le Goater
2019-01-09 4:27 ` David Gibson
2019-01-22 4:56 ` Paul Mackerras
2019-01-23 16:24 ` Cédric Le Goater
2019-02-04 0:50 ` David Gibson
2019-02-04 10:16 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 04/19] KVM: PPC: Book3S HV: export services for the XIVE native exploitation device Cédric Le Goater
2019-01-11 4:09 ` David Gibson
2019-01-07 18:43 ` [PATCH 05/19] KVM: PPC: Book3S HV: add a new KVM device for the XIVE native exploitation mode Cédric Le Goater
2019-01-22 5:05 ` Paul Mackerras
2019-01-23 16:28 ` Cédric Le Goater
2019-01-28 17:35 ` Cédric Le Goater
2019-01-30 4:29 ` Paul Mackerras
2019-01-30 7:01 ` Cédric Le Goater
2019-01-31 3:01 ` Paul Mackerras
2019-02-01 17:03 ` Cédric Le Goater
2019-02-04 4:25 ` David Gibson
2019-02-04 11:19 ` Cédric Le Goater
2019-02-05 5:26 ` David Gibson
2019-01-07 18:43 ` [PATCH 06/19] KVM: PPC: Book3S HV: add a GET_ESB_FD control to the XIVE native device Cédric Le Goater
2019-01-22 5:09 ` Paul Mackerras
2019-01-23 16:48 ` Cédric Le Goater
2019-02-04 4:45 ` David Gibson
2019-02-04 11:30 ` Cédric Le Goater
2019-02-05 5:28 ` David Gibson
2019-02-05 12:55 ` Cédric Le Goater
2019-02-06 1:23 ` David Gibson
2019-02-06 7:21 ` Cédric Le Goater
2019-02-07 2:49 ` David Gibson
2019-02-07 9:03 ` Cédric Le Goater
2019-02-08 5:15 ` David Gibson
2019-02-08 7:58 ` Cédric Le Goater
2019-02-08 21:53 ` Paul Mackerras
2019-02-09 9:41 ` Cédric Le Goater
2019-02-11 2:38 ` David Gibson
2019-02-11 6:42 ` Benjamin Herrenschmidt
2019-02-12 22:07 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 07/19] KVM: PPC: Book3S HV: add a GET_TIMA_FD control to " Cédric Le Goater
2019-01-07 18:43 ` [PATCH 08/19] KVM: PPC: Book3S HV: add a VC_BASE control to the " Cédric Le Goater
2019-01-22 5:14 ` Paul Mackerras
2019-01-23 16:56 ` Cédric Le Goater
2019-02-04 4:49 ` David Gibson
2019-02-04 15:36 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 09/19] KVM: PPC: Book3S HV: add a SET_SOURCE " Cédric Le Goater
2019-02-04 4:57 ` David Gibson
2019-02-04 19:07 ` Cédric Le Goater
2019-02-05 5:35 ` David Gibson
2019-02-05 13:39 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 10/19] KVM: PPC: Book3S HV: add a EISN attribute to kvmppc_xive_irq_state Cédric Le Goater
2019-01-07 18:43 ` [PATCH 11/19] KVM: PPC: Book3S HV: add support for the XIVE native exploitation mode hcalls Cédric Le Goater
2019-01-22 5:23 ` Paul Mackerras
2019-01-23 6:44 ` Benjamin Herrenschmidt
2019-01-23 8:48 ` Cédric Le Goater
2019-01-23 10:26 ` Paul Mackerras
2019-01-23 10:48 ` Cédric Le Goater
2019-01-23 21:23 ` Benjamin Herrenschmidt
2019-01-07 18:43 ` [PATCH 12/19] KVM: PPC: Book3S HV: record guest queue page address Cédric Le Goater
2019-02-04 5:15 ` David Gibson
2019-02-04 15:37 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 13/19] KVM: PPC: Book3S HV: add a SYNC control for the XIVE native migration Cédric Le Goater
2019-02-04 5:17 ` David Gibson
2019-02-04 15:39 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 14/19] KVM: PPC: Book3S HV: add a control to make the XIVE EQ pages dirty Cédric Le Goater
2019-02-04 5:18 ` David Gibson
2019-02-04 15:46 ` Cédric Le Goater
2019-02-05 5:30 ` David Gibson
2019-01-07 18:43 ` [PATCH 15/19] KVM: PPC: Book3S HV: add get/set accessors for the source configuration Cédric Le Goater
2019-02-04 5:21 ` David Gibson
2019-02-04 16:07 ` Cédric Le Goater [this message]
2019-02-05 5:32 ` David Gibson
2019-02-05 13:03 ` Cédric Le Goater
2019-02-06 1:23 ` David Gibson
2019-02-06 1:24 ` David Gibson
2019-02-06 7:07 ` Cédric Le Goater
2019-02-07 2:48 ` David Gibson
2019-02-07 9:13 ` Cédric Le Goater
2019-02-08 5:15 ` David Gibson
2019-02-14 16:50 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 16/19] KVM: PPC: Book3S HV: add get/set accessors for the EQ configuration Cédric Le Goater
2019-02-04 5:24 ` David Gibson
2019-02-05 17:45 ` Cédric Le Goater
2019-01-07 19:10 ` [PATCH 17/19] KVM: PPC: Book3S HV: add get/set accessors for the VP XIVE state Cédric Le Goater
2019-01-07 19:10 ` [PATCH 18/19] KVM: PPC: Book3S HV: add passthrough support Cédric Le Goater
2019-01-22 5:26 ` Paul Mackerras
2019-01-23 6:45 ` Benjamin Herrenschmidt
2019-01-23 10:30 ` Paul Mackerras
2019-01-23 11:07 ` Cédric Le Goater
2019-01-28 6:13 ` Paul Mackerras
2019-01-28 18:26 ` Cédric Le Goater
2019-01-29 2:45 ` Paul Mackerras
2019-01-29 13:47 ` Cédric Le Goater
2019-01-30 6:20 ` Paul Mackerras
2019-01-30 15:54 ` Cédric Le Goater
2019-01-31 2:48 ` Paul Mackerras
2019-01-29 4:12 ` Paul Mackerras
2019-01-29 17:44 ` Cédric Le Goater
2019-01-30 5:55 ` Paul Mackerras
2019-01-30 7:06 ` Cédric Le Goater
2019-01-23 21:25 ` Benjamin Herrenschmidt
2019-01-24 8:41 ` Cédric Le Goater
2019-01-28 4:43 ` Paul Mackerras
2019-01-29 13:46 ` Cédric Le Goater
2019-01-07 19:10 ` [PATCH 19/19] KVM: introduce a KVM_DELETE_DEVICE ioctl Cédric Le Goater
2019-01-22 5:42 ` Paul Mackerras
2019-01-23 18:39 ` Cédric Le Goater
2019-01-23 21:32 ` Benjamin Herrenschmidt
2019-02-04 5:26 ` [PATCH 17/19] KVM: PPC: Book3S HV: add get/set accessors for the VP XIVE state David Gibson
2019-02-04 18:57 ` Cédric Le Goater
2019-02-05 5:33 ` David Gibson
2019-02-05 11:58 ` Cédric Le Goater
2019-02-06 1:19 ` David Gibson
2019-01-22 4:46 ` [PATCH 00/19] KVM: PPC: Book3S HV: add XIVE native exploitation mode Paul Mackerras
2019-01-23 19:07 ` Cédric Le Goater
2019-01-23 21:35 ` Benjamin Herrenschmidt
2019-01-26 8:25 ` Cédric Le Goater
2019-02-04 5:36 ` David Gibson
2019-02-05 11:31 ` Cédric Le Goater
2019-02-05 22:13 ` Paul Mackerras
2019-02-06 1:18 ` David Gibson
2019-02-06 7:35 ` Cédric Le Goater
2019-02-07 2:51 ` David Gibson
2019-02-07 8:31 ` Cédric Le Goater
2019-02-08 5:07 ` David Gibson
2019-02-08 7:38 ` Cédric Le Goater
2019-01-28 5:51 ` Paul Mackerras
2019-01-29 13:51 ` Cédric Le Goater
2019-01-30 5:40 ` Paul Mackerras
2019-01-30 15:36 ` Cédric Le Goater
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