vsie.c (1260ed77798502de9c98020040d2995008de10cc) vsie.c (d6c8097803cbc3bb8d875baef542e6d77d10c203)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * kvm nested virtualization support for s390x
4 *
5 * Copyright IBM Corp. 2016, 2018
6 *
7 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
8 */

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18#include <asm/gmap.h>
19#include <asm/mmu_context.h>
20#include <asm/sclp.h>
21#include <asm/nmi.h>
22#include <asm/dis.h>
23#include <asm/facility.h>
24#include "kvm-s390.h"
25#include "gaccess.h"
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * kvm nested virtualization support for s390x
4 *
5 * Copyright IBM Corp. 2016, 2018
6 *
7 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
8 */

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18#include <asm/gmap.h>
19#include <asm/mmu_context.h>
20#include <asm/sclp.h>
21#include <asm/nmi.h>
22#include <asm/dis.h>
23#include <asm/facility.h>
24#include "kvm-s390.h"
25#include "gaccess.h"
26#include "gmap.h"
27
28enum vsie_page_flags {
29 VSIE_PAGE_IN_USE = 0,
30};
31
32struct vsie_page {
33 struct kvm_s390_sie_block scb_s; /* 0x0000 */
34 /*

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63 * looked up by other CPUs.
64 */
65 unsigned long flags; /* 0x0260 */
66 __u8 reserved[0x0700 - 0x0268]; /* 0x0268 */
67 struct kvm_s390_crypto_cb crycb; /* 0x0700 */
68 __u8 fac[S390_ARCH_FAC_LIST_SIZE_BYTE]; /* 0x0800 */
69};
70
26
27enum vsie_page_flags {
28 VSIE_PAGE_IN_USE = 0,
29};
30
31struct vsie_page {
32 struct kvm_s390_sie_block scb_s; /* 0x0000 */
33 /*

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62 * looked up by other CPUs.
63 */
64 unsigned long flags; /* 0x0260 */
65 __u8 reserved[0x0700 - 0x0268]; /* 0x0268 */
66 struct kvm_s390_crypto_cb crycb; /* 0x0700 */
67 __u8 fac[S390_ARCH_FAC_LIST_SIZE_BYTE]; /* 0x0800 */
68};
69
70/**
71 * gmap_shadow_valid() - check if a shadow guest address space matches the
72 * given properties and is still valid
73 * @sg: pointer to the shadow guest address space structure
74 * @asce: ASCE for which the shadow table is requested
75 * @edat_level: edat level to be used for the shadow translation
76 *
77 * Returns 1 if the gmap shadow is still valid and matches the given
78 * properties, the caller can continue using it. Returns 0 otherwise; the
79 * caller has to request a new shadow gmap in this case.
80 */
81int gmap_shadow_valid(struct gmap *sg, unsigned long asce, int edat_level)
82{
83 if (sg->removed)
84 return 0;
85 return sg->orig_asce == asce && sg->edat_level == edat_level;
86}
87
71/* trigger a validity icpt for the given scb */
72static int set_validity_icpt(struct kvm_s390_sie_block *scb,
73 __u16 reason_code)
74{
75 scb->ipa = 0x1000;
76 scb->ipb = ((__u32) reason_code) << 16;
77 scb->icptcode = ICPT_VALIDITY;
78 return 1;

--- 1471 unchanged lines hidden --- 		88/* trigger a validity icpt for the given scb */
89static int set_validity_icpt(struct kvm_s390_sie_block *scb,
90 __u16 reason_code)
91{
92 scb->ipa = 0x1000;
93 scb->ipb = ((__u32) reason_code) << 16;
94 scb->icptcode = ICPT_VALIDITY;
95 return 1;

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