Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Claudio Imbrenda |
52 |
44.44% |
4 |
30.77% |
| Martin Schwidefsky |
45 |
38.46% |
4 |
30.77% |
| David Hildenbrand |
19 |
16.24% |
4 |
30.77% |
| Vasily Gorbik |
1 |
0.85% |
1 |
7.69% |
| Total |
117 |
|
13 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* KVM guest address space mapping code
*
* Copyright IBM Corp. 2007, 2016, 2025
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
* Claudio Imbrenda <imbrenda@linux.ibm.com>
*/
#ifndef ARCH_KVM_S390_GMAP_H
#define ARCH_KVM_S390_GMAP_H
#define GMAP_SHADOW_FAKE_TABLE 1ULL
int gmap_make_secure(struct gmap *gmap, unsigned long gaddr, void *uvcb);
int gmap_convert_to_secure(struct gmap *gmap, unsigned long gaddr);
int gmap_destroy_page(struct gmap *gmap, unsigned long gaddr);
struct gmap *gmap_shadow(struct gmap *parent, unsigned long asce, int edat_level);
/**
* gmap_shadow_valid - check if a shadow guest address space matches the
* given properties and is still valid
* @sg: pointer to the shadow guest address space structure
* @asce: ASCE for which the shadow table is requested
* @edat_level: edat level to be used for the shadow translation
*
* Returns 1 if the gmap shadow is still valid and matches the given
* properties, the caller can continue using it. Returns 0 otherwise, the
* caller has to request a new shadow gmap in this case.
*
*/
static inline int gmap_shadow_valid(struct gmap *sg, unsigned long asce, int edat_level)
{
if (sg->removed)
return 0;
return sg->orig_asce == asce && sg->edat_level == edat_level;
}
#endif