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From: Janosch Frank <frankja@linux.ibm.com>
To: Tony Krowiak <akrowiak@linux.vnet.ibm.com>,
	linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
	kvm@vger.kernel.org
Cc: freude@de.ibm.com, schwidefsky@de.ibm.com,
	heiko.carstens@de.ibm.com, borntraeger@de.ibm.com,
	cohuck@redhat.com, kwankhede@nvidia.com,
	bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com,
	alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com,
	alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com,
	jjherne@linux.vnet.ibm.com, thuth@redhat.com,
	pasic@linux.vnet.ibm.com, berrange@redhat.com,
	fiuczy@linux.vnet.ibm.com, buendgen@de.ibm.com,
	Pierre Morel <pmorel@linux.ibm.com>
Subject: Re: [PATCH v8 20/22] KVM: s390: Handling of Cypto control block in VSIE
Date: Thu, 9 Aug 2018 08:20:28 +0200
Message-ID: <dc8b3e66-9ba4-2b78-1e49-12a35d5d234b@linux.ibm.com> (raw)
In-Reply-To: <1533739472-7172-21-git-send-email-akrowiak@linux.vnet.ibm.com>

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On 08.08.2018 16:44, Tony Krowiak wrote:
> From: Pierre Morel <pmorel@linux.ibm.com>
> +#define ECA_APIE 0x00000008

That shouldn't be necessary, it's defined in kvm_host.h which vsie.c
includes. Or is it not?

> +static int shadow_crycb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
> +{
> +	struct kvm_s390_sie_block *scb_s = &vsie_page->scb_s;
> +	struct kvm_s390_sie_block *scb_o = vsie_page->scb_o;
> +	const uint32_t crycbd_o = READ_ONCE(scb_o->crycbd);
> +	const u32 crycb_addr = crycbd_o & 0x7ffffff8U;
> +	int g2_fmt = vcpu->arch.sie_block->crycbd & CRYCB_FORMAT_MASK;
> +	int g3_fmt = crycbd_o & CRYCB_FORMAT_MASK;
> +	int g2_apie, g2_msa3, g3_apie, g3_msa3;
> +	int size, ret;
> +
> +	/* crycb should not cross a page boundary */
> +	size = (g3_fmt == CRYCB_FORMAT2) ? 0x100 : 0x80;
> +	if ((crycb_addr & PAGE_MASK) != ((crycb_addr + size) & PAGE_MASK))
> +		return set_validity_icpt(scb_s, 0x003CU);
> +
> +	g2_apie = vcpu->arch.sie_block->eca & ECA_APIE;
> +	g3_apie = scb_o->eca & g2_apie;
> +
> +	g2_msa3 = test_kvm_facility(vcpu->kvm, 76);
> +	g3_msa3 = (g3_fmt != CRYCB_FORMAT0) & g2_msa3;
> +
> +	scb_s->crycbd = 0;
> +	/* If no AP instructions and no keys we just set crycbd to 0 */
> +	if (!(g3_apie || g3_msa3))
> +		return 0;
> +
> +	if (!crycb_addr)
> +		return set_validity_icpt(scb_s, 0x0039U);
> +
> +	if (g3_apie) {
> +		ret = copy_apcb(vcpu, vsie_page, g2_fmt, g3_fmt);
> +		if (ret)
> +			goto out;

s/goto out;/return ret;/

> +		scb_s->eca |= g3_apie;
> +	}
> +
> +	if (g3_msa3)
> +		ret = copy_key_masks(vcpu, vsie_page);
> +
> +	if (!ret)
> +		scb_s->crycbd = ((__u32)(__u64) &vsie_page->crycb) | g2_fmt;
> +
> +out:
> +	return ret;
> +}
> +
>  /* shadow (round up/down) the ibc to avoid validity icpt */
>  static void prepare_ibc(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
>  {
> 



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  reply index

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-08 14:44 [PATCH v8 00/22] vfio-ap: guest dedicated crypto adapters Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 01/22] s390/zcrypt: Add ZAPQ inline function Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 02/22] s390/zcrypt: Review inline assembler constraints Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 03/22] s390/zcrypt: Show load of cards and queues in sysfs Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 04/22] s390/zcrypt: Integrate ap_asm.h into include/asm/ap.h Tony Krowiak
2018-08-09  9:06   ` Cornelia Huck
2018-08-09  9:17     ` Harald Freudenberger
2018-08-09 13:45       ` Harald Freudenberger
2018-08-09 16:06       ` Tony Krowiak
2018-08-10  8:49         ` Cornelia Huck
2018-08-10  9:37           ` Harald Freudenberger
2018-08-10 15:53             ` Tony Krowiak
2018-08-10 15:50           ` Tony Krowiak
2018-08-09 15:18     ` Tony Krowiak
2018-08-09 15:43       ` Heiko Carstens
2018-08-09 16:55         ` Tony Krowiak
2018-08-13  9:24     ` Harald Freudenberger
2018-08-13  9:34       ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 05/22] KVM: s390: vsie: simulate VCPU SIE entry/exit Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 06/22] KVM: s390: introduce and use KVM_REQ_VSIE_RESTART Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 07/22] KVM: s390: refactor crypto initialization Tony Krowiak
2018-08-09  5:58   ` Janosch Frank
2018-08-10 16:13     ` Tony Krowiak
2018-08-09  8:25   ` David Hildenbrand
2018-08-09 19:54     ` Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 08/22] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-08-09 10:12   ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 09/22] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-08-09 11:06   ` Cornelia Huck
2018-08-09 16:27     ` Pierre Morel
2018-08-10  8:59       ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 10/22] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 11/22] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 12/22] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 13/22] s390: vfio-ap: sysfs interface to view matrix mdev matrix Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 14/22] KVM: s390: interfaces to clear CRYCB masks Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 15/22] s390: vfio-ap: implement mediated device open callback Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 16/22] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 17/22] s390: vfio-ap: zeroize the AP queues Tony Krowiak
2018-08-10  9:14   ` Cornelia Huck
2018-08-10 10:49     ` Pierre Morel
2018-08-10 11:16       ` Cornelia Huck
2018-08-10 16:24         ` Tony Krowiak
2018-08-13  6:57           ` Cornelia Huck
2018-08-08 14:44 ` [PATCH v8 18/22] s390: vfio-ap: implement VFIO_DEVICE_RESET ioctl Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 19/22] KVM: s390: Clear Crypto Control Block when using vSIE Tony Krowiak
2018-08-09  8:10   ` David Hildenbrand
2018-08-09  8:50     ` Pierre Morel
2018-08-09  8:57     ` Pierre Morel
2018-08-08 14:44 ` [PATCH v8 20/22] KVM: s390: Handling of Cypto control block in VSIE Tony Krowiak
2018-08-09  6:20   ` Janosch Frank [this message]
2018-08-09  7:33     ` Pierre Morel
2018-08-08 14:44 ` [PATCH v8 21/22] KVM: s390: CPU model support for AP virtualization Tony Krowiak
2018-08-09  8:17   ` David Hildenbrand
2018-08-09  8:34     ` Harald Freudenberger
2018-08-09 20:27     ` Tony Krowiak
2018-08-08 14:44 ` [PATCH v8 22/22] s390: doc: detailed specifications " Tony Krowiak
2018-08-08 15:06 ` [PATCH v8 00/22] vfio-ap: guest dedicated crypto adapters Janosch Frank
2018-08-08 16:25 ` Cornelia Huck
2018-08-08 22:52   ` Tony Krowiak

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