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kaf24@firebug.cl.cam.ac.uk
d96c9af4a3
This is used by ia64 because it directly reads the P2M table. Signed-off-by: Tristan Gingold <tristan.gingold@bull.net>
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
#include "xg_private.h"
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#include "xenguest.h"
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#include "xc_private.h"
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#include "xc_elf.h"
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#include <stdlib.h>
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#include <zlib.h>
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#include "xen/arch-ia64.h"
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#include <xen/hvm/ioreq.h>
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/* this is a very ugly way of getting FPSR_DEFAULT. struct ia64_fpreg is
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* mysteriously declared in two places: /usr/include/asm/fpu.h and
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* /usr/include/bits/sigcontext.h. The former also defines FPSR_DEFAULT,
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* the latter doesn't but is included (indirectly) by xg_private.h */
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#define __ASSEMBLY__
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#include <asm/fpu.h>
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#undef __IA64_UL
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#define __IA64_UL(x) ((unsigned long)(x))
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#undef __ASSEMBLY__
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unsigned long
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xc_ia64_fpsr_default(void)
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{
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return FPSR_DEFAULT;
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}
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/*
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VMM uses put_user to copy pfn_list to guest buffer, this maybe fail,
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VMM doesn't handle this now.
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This method will touch guest buffer to make sure the buffer's mapping
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is tracked by VMM,
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*/
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int
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xc_ia64_get_pfn_list(int xc_handle, uint32_t domid, xen_pfn_t *pfn_buf,
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unsigned int start_page, unsigned int nr_pages)
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{
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struct xen_domctl domctl;
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int num_pfns,ret;
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unsigned int __start_page, __nr_pages;
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xen_pfn_t *__pfn_buf;
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__start_page = start_page;
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__nr_pages = nr_pages;
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__pfn_buf = pfn_buf;
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while (__nr_pages) {
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domctl.cmd = XEN_DOMCTL_getmemlist;
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domctl.domain = (domid_t)domid;
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domctl.u.getmemlist.max_pfns = __nr_pages;
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domctl.u.getmemlist.start_pfn =__start_page;
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domctl.u.getmemlist.num_pfns = 0;
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set_xen_guest_handle(domctl.u.getmemlist.buffer, __pfn_buf);
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if (mlock(__pfn_buf, __nr_pages * sizeof(xen_pfn_t)) != 0) {
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PERROR("Could not lock pfn list buffer");
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return -1;
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}
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ret = do_domctl(xc_handle, &domctl);
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(void)munlock(__pfn_buf, __nr_pages * sizeof(xen_pfn_t));
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num_pfns = domctl.u.getmemlist.num_pfns;
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__start_page += num_pfns;
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__nr_pages -= num_pfns;
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__pfn_buf += num_pfns;
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if (ret < 0)
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// dummy write to make sure this tlb mapping is tracked by VMM
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*__pfn_buf = 0;
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else
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return nr_pages;
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}
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return nr_pages;
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}
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int
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xc_get_pfn_list(int xc_handle, uint32_t domid, xen_pfn_t *pfn_buf,
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unsigned long max_pfns)
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{
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return xc_ia64_get_pfn_list (xc_handle, domid, pfn_buf, 0, max_pfns);
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}
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long
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xc_get_max_pages(int xc_handle, uint32_t domid)
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{
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struct xen_domctl domctl;
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domctl.cmd = XEN_DOMCTL_getdomaininfo;
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domctl.domain = (domid_t)domid;
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return (do_domctl(xc_handle, &domctl) < 0) ? -1 : domctl.u.getdomaininfo.max_pages;
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}
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/*
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* Local variables:
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* mode: C
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* c-set-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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