cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

xen.h (2136B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _XEN_XEN_H
      3#define _XEN_XEN_H
      4
      5enum xen_domain_type {
      6	XEN_NATIVE,		/* running on bare hardware    */
      7	XEN_PV_DOMAIN,		/* running in a PV domain      */
      8	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
      9};
     10
     11#ifdef CONFIG_XEN
     12extern enum xen_domain_type xen_domain_type;
     13#else
     14#define xen_domain_type		XEN_NATIVE
     15#endif
     16
     17#ifdef CONFIG_XEN_PVH
     18extern bool xen_pvh;
     19#else
     20#define xen_pvh			0
     21#endif
     22
     23#define xen_domain()		(xen_domain_type != XEN_NATIVE)
     24#define xen_pv_domain()		(xen_domain_type == XEN_PV_DOMAIN)
     25#define xen_hvm_domain()	(xen_domain_type == XEN_HVM_DOMAIN)
     26#define xen_pvh_domain()	(xen_pvh)
     27
     28#include <linux/types.h>
     29
     30extern uint32_t xen_start_flags;
     31
     32#include <xen/interface/hvm/start_info.h>
     33extern struct hvm_start_info pvh_start_info;
     34
     35#ifdef CONFIG_XEN_DOM0
     36#include <xen/interface/xen.h>
     37#include <asm/xen/hypervisor.h>
     38
     39#define xen_initial_domain()	(xen_domain() && \
     40				 (xen_start_flags & SIF_INITDOMAIN))
     41#else  /* !CONFIG_XEN_DOM0 */
     42#define xen_initial_domain()	(0)
     43#endif	/* CONFIG_XEN_DOM0 */
     44
     45struct bio_vec;
     46struct page;
     47
     48bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
     49		const struct page *page);
     50
     51#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
     52extern u64 xen_saved_max_mem_size;
     53#endif
     54
     55#include <linux/platform-feature.h>
     56
     57static inline void xen_set_restricted_virtio_memory_access(void)
     58{
     59	if (IS_ENABLED(CONFIG_XEN_VIRTIO) && xen_domain())
     60		platform_set(PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS);
     61}
     62
     63#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
     64int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
     65void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
     66#include <linux/ioport.h>
     67int arch_xen_unpopulated_init(struct resource **res);
     68#else
     69#include <xen/balloon.h>
     70static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
     71		struct page **pages)
     72{
     73	return xen_alloc_ballooned_pages(nr_pages, pages);
     74}
     75static inline void xen_free_unpopulated_pages(unsigned int nr_pages,
     76		struct page **pages)
     77{
     78	xen_free_ballooned_pages(nr_pages, pages);
     79}
     80#endif
     81
     82#endif	/* _XEN_XEN_H */