diff options
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/mmu.c | 2 | ||||
| -rw-r--r-- | arch/x86/xen/p2m.c | 30 | ||||
| -rw-r--r-- | arch/x86/xen/setup.c | 6 |
3 files changed, 34 insertions, 4 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index b5f776f60b1b..02d752460371 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1187,7 +1187,7 @@ static void drop_other_mm_ref(void *info) active_mm = percpu_read(cpu_tlbstate.active_mm); - if (active_mm == mm) + if (active_mm == mm && percpu_read(cpu_tlbstate.state) != TLBSTATE_OK) leave_mm(smp_processor_id()); /* If this cpu still has a stale cr3 reference, then make sure diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index c851397e657c..58efeb9d5440 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -522,11 +522,20 @@ static bool __init __early_alloc_p2m(unsigned long pfn) /* Boundary cross-over for the edges: */ if (idx) { unsigned long *p2m = extend_brk(PAGE_SIZE, PAGE_SIZE); + unsigned long *mid_mfn_p; p2m_init(p2m); p2m_top[topidx][mididx] = p2m; + /* For save/restore we need to MFN of the P2M saved */ + + mid_mfn_p = p2m_top_mfn_p[topidx]; + WARN(mid_mfn_p[mididx] != virt_to_mfn(p2m_missing), + "P2M_TOP_P[%d][%d] != MFN of p2m_missing!\n", + topidx, mididx); + mid_mfn_p[mididx] = virt_to_mfn(p2m); + } return idx != 0; } @@ -549,12 +558,29 @@ unsigned long __init set_phys_range_identity(unsigned long pfn_s, pfn += P2M_MID_PER_PAGE * P2M_PER_PAGE) { unsigned topidx = p2m_top_index(pfn); - if (p2m_top[topidx] == p2m_mid_missing) { - unsigned long **mid = extend_brk(PAGE_SIZE, PAGE_SIZE); + unsigned long *mid_mfn_p; + unsigned long **mid; + + mid = p2m_top[topidx]; + mid_mfn_p = p2m_top_mfn_p[topidx]; + if (mid == p2m_mid_missing) { + mid = extend_brk(PAGE_SIZE, PAGE_SIZE); p2m_mid_init(mid); p2m_top[topidx] = mid; + + BUG_ON(mid_mfn_p != p2m_mid_missing_mfn); + } + /* And the save/restore P2M tables.. */ + if (mid_mfn_p == p2m_mid_missing_mfn) { + mid_mfn_p = extend_brk(PAGE_SIZE, PAGE_SIZE); + p2m_mid_mfn_init(mid_mfn_p); + + p2m_top_mfn_p[topidx] = mid_mfn_p; + p2m_top_mfn[topidx] = virt_to_mfn(mid_mfn_p); + /* Note: we don't set mid_mfn_p[midix] here, + * look in __early_alloc_p2m */ } } diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index d3663df2f967..be1a464f6d66 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -166,7 +166,7 @@ static unsigned long __init xen_set_identity(const struct e820entry *list, if (last > end) continue; - if (entry->type == E820_RAM) { + if ((entry->type == E820_RAM) || (entry->type == E820_UNUSABLE)) { if (start > start_pci) identity += set_phys_range_identity( PFN_UP(start_pci), PFN_DOWN(start)); @@ -227,7 +227,11 @@ char * __init xen_memory_setup(void) memcpy(map_raw, map, sizeof(map)); e820.nr_map = 0; +#ifdef CONFIG_X86_32 + xen_extra_mem_start = mem_end; +#else xen_extra_mem_start = max((1ULL << 32), mem_end); +#endif for (i = 0; i < memmap.nr_entries; i++) { unsigned long long end; |