Author: kib
Date: Thu Nov 12 00:51:53 2020
New Revision: 367607
URL: https://svnweb.freebsd.org/changeset/base/367607

Log:
  bhyve: increase allowed size for 64bit BAR allocation below 4G from 32 to 128 
MB.
  
  Reviewed by:  grehan
  Sponsored by: The FreeBSD Foundation
  MFC after:    2 weeks
  Differential revision:        https://reviews.freebsd.org/D27095

Modified:
  head/usr.sbin/bhyve/pci_emul.c

Modified: head/usr.sbin/bhyve/pci_emul.c
==============================================================================
--- head/usr.sbin/bhyve/pci_emul.c      Thu Nov 12 00:46:53 2020        
(r367606)
+++ head/usr.sbin/bhyve/pci_emul.c      Thu Nov 12 00:51:53 2020        
(r367607)
@@ -625,9 +625,9 @@ pci_emul_alloc_pbar(struct pci_devinst *pdi, int idx, 
                 * Some drivers do not work well if the 64-bit BAR is allocated
                 * above 4GB. Allow for this by allocating small requests under
                 * 4GB unless then allocation size is larger than some arbitrary
-                * number (32MB currently).
+                * number (128MB currently).
                 */
-               if (size > 32 * 1024 * 1024) {
+               if (size > 128 * 1024 * 1024) {
                        /*
                         * XXX special case for device requiring peer-peer DMA
                         */
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