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[PULL,24/36] spapr: Make hash table size a factor of maxram_size

Message ID 1442973338-17771-25-git-send-email-david@gibson.dropbear.id.au
State New
Headers show

Commit Message

David Gibson Sept. 23, 2015, 1:55 a.m. UTC 
From: Bharata B Rao <bharata@linux.vnet.ibm.com>

The hash table size is dependent on ram_size, but since with hotplug
the memory can grow till maxram_size. Hence make hash table size dependent
on maxram_size.

This allows to hotplug huge amounts of memory to the guest.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 2f49f97..d21e95c 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1715,7 +1715,7 @@  static void ppc_spapr_init(MachineState *machine)
      * more than needed for the Linux guests we support. */
     spapr->htab_shift = 18; /* Minimum architected size */
     while (spapr->htab_shift <= 46) {
-        if ((1ULL << (spapr->htab_shift + 7)) >= machine->ram_size) {
+        if ((1ULL << (spapr->htab_shift + 7)) >= machine->maxram_size) {
             break;
         }
         spapr->htab_shift++;