From df0acded19ec4b826aa095cfc19d341bd66fafd3 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Tue, 29 Sep 2015 16:53:28 +0200 Subject: memhp: extend address auto assignment to support gaps setting gap to TRUE will make sparse DIMM address auto allocation, leaving gaps between a new DIMM address and preceeding existing DIMM. Signed-off-by: Igor Mammedov Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/mem/pc-dimm.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'hw/mem') diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index bb04862de8..6cc6ac30e7 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -32,7 +32,8 @@ typedef struct pc_dimms_capacity { } pc_dimms_capacity; void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms, - MemoryRegion *mr, uint64_t align, Error **errp) + MemoryRegion *mr, uint64_t align, bool gap, + Error **errp) { int slot; MachineState *machine = MACHINE(qdev_get_machine()); @@ -48,7 +49,7 @@ void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms, addr = pc_dimm_get_free_addr(hpms->base, memory_region_size(&hpms->mr), - !addr ? NULL : &addr, align, + !addr ? NULL : &addr, align, gap, memory_region_size(mr), &local_err); if (local_err) { goto out; @@ -287,8 +288,8 @@ static int pc_dimm_built_list(Object *obj, void *opaque) uint64_t pc_dimm_get_free_addr(uint64_t address_space_start, uint64_t address_space_size, - uint64_t *hint, uint64_t align, uint64_t size, - Error **errp) + uint64_t *hint, uint64_t align, bool gap, + uint64_t size, Error **errp) { GSList *list = NULL, *item; uint64_t new_addr, ret = 0; @@ -333,13 +334,15 @@ uint64_t pc_dimm_get_free_addr(uint64_t address_space_start, goto out; } - if (ranges_overlap(dimm->addr, dimm_size, new_addr, size)) { + if (ranges_overlap(dimm->addr, dimm_size, new_addr, + size + (gap ? 1 : 0))) { if (hint) { DeviceState *d = DEVICE(dimm); error_setg(errp, "address range conflicts with '%s'", d->id); goto out; } - new_addr = QEMU_ALIGN_UP(dimm->addr + dimm_size, align); + new_addr = QEMU_ALIGN_UP(dimm->addr + dimm_size + (gap ? 1 : 0), + align); } } ret = new_addr; -- cgit v1.2.3