[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [mini-os master] mini-os: add proper pvh grant table handling
commit 65bfe41de2018f3ace1b9a7193e785b45bffb38e Author: Juergen Gross <jgross@xxxxxxxx> AuthorDate: Tue Dec 21 09:46:34 2021 +0100 Commit: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> CommitDate: Tue Dec 21 10:53:49 2021 +0000 mini-os: add proper pvh grant table handling Grant table initialization for PVH requires some additional actions compared to PV mode. Add those. Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> --- arch/x86/gnttab.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/arch/x86/gnttab.c b/arch/x86/gnttab.c index 56e59d7..281c207 100644 --- a/arch/x86/gnttab.c +++ b/arch/x86/gnttab.c @@ -22,11 +22,15 @@ */ #include <mini-os/os.h> +#include <mini-os/console.h> +#include <mini-os/e820.h> #include <mini-os/hypervisor.h> #include <mini-os/gnttab.h> #include <mini-os/mm.h> #include <mini-os/types.h> +#include <xen/memory.h> +#ifdef CONFIG_PARAVIRT grant_entry_v1_t *arch_init_gnttab(int nr_grant_frames) { struct gnttab_setup_table setup; @@ -39,6 +43,33 @@ grant_entry_v1_t *arch_init_gnttab(int nr_grant_frames) HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1); return map_frames(frames, nr_grant_frames); } +#else +grant_entry_v1_t *arch_init_gnttab(int nr_grant_frames) +{ + int i, rc; + struct xen_add_to_physmap xatp; + unsigned long pfn; + unsigned long frames[nr_grant_frames]; + + pfn = e820_get_reserved_pfns(nr_grant_frames); + for ( i = 0; i < nr_grant_frames; i++ ) + { + xatp.domid = DOMID_SELF; + xatp.idx = i; + xatp.space = XENMAPSPACE_grant_table; + xatp.gpfn = pfn + i; + rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp); + if ( rc ) + { + xprintk("could not init grant table\n"); + do_exit(); + } + frames[i] = pfn + i; + } + + return map_frames(frames, nr_grant_frames); +} +#endif void arch_suspend_gnttab(grant_entry_v1_t *gnttab_table, int nr_grant_frames) { -- generated by git-patchbot for /home/xen/git/mini-os.git#master
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