On 09/08/2018 08:20, Janosch Frank wrote:
On 08.08.2018 16:44, Tony Krowiak wrote:
From: Pierre Morel <pmo...@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?
This was forgotten here for a long long time!
You are right I remove it.
+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;/
better
Thanks
Pierre
--
Pierre Morel
Linux/KVM/QEMU in Böblingen - Germany
