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| author | Rusty Russell <rusty@rustcorp.com.au> | 2015-02-11 07:45:10 +0300 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2015-02-11 09:17:33 +0300 |
| commit | 7313d5217e6b9817897172d6a6ff477bdc415ed6 (patch) | |
| tree | 448fc79d9048af296aeb6c6fbbf5da84dc6f7046 /drivers/lguest/lg.h | |
| parent | d1c29465b8a52d8fc5a59aac92c6b206b69fe631 (diff) | |
| download | linux-7313d5217e6b9817897172d6a6ff477bdc415ed6.tar.xz | |
lguest: add iomem region, where guest page faults get sent to userspace.
This lets us implement PCI.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/lg.h')
| -rw-r--r-- | drivers/lguest/lg.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h index 9da4f351e077..eb81abc05995 100644 --- a/drivers/lguest/lg.h +++ b/drivers/lguest/lg.h @@ -97,8 +97,12 @@ struct lguest { struct lg_cpu cpus[NR_CPUS]; unsigned int nr_cpus; + /* Valid guest memory pages must be < this. */ u32 pfn_limit; + /* Device memory is >= pfn_limit and < device_limit. */ + u32 device_limit; + /* * This provides the offset to the base of guest-physical memory in the * Launcher. @@ -200,7 +204,8 @@ void guest_pagetable_flush_user(struct lg_cpu *cpu); void guest_set_pte(struct lg_cpu *cpu, unsigned long gpgdir, unsigned long vaddr, pte_t val); void map_switcher_in_guest(struct lg_cpu *cpu, struct lguest_pages *pages); -bool demand_page(struct lg_cpu *cpu, unsigned long cr2, int errcode); +bool demand_page(struct lg_cpu *cpu, unsigned long cr2, int errcode, + unsigned long *iomem); void pin_page(struct lg_cpu *cpu, unsigned long vaddr); bool __guest_pa(struct lg_cpu *cpu, unsigned long vaddr, unsigned long *paddr); unsigned long guest_pa(struct lg_cpu *cpu, unsigned long vaddr); |