Instead of open coding a calculation for it.
Signed-off-by: Roger PAu Monné <roger....@citrix.com>
---
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Andrew Cooper <andrew.coop...@citrix.com>
---
xen/arch/x86/dom0_build.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/xen/arch/x86/dom0_build.c b/xen/arch/x86/dom0_build.c
index f616b99ddc..c997f5e6f5 100644
--- a/xen/arch/x86/dom0_build.c
+++ b/xen/arch/x86/dom0_build.c
@@ -254,14 +254,9 @@ unsigned long __init dom0_compute_nr_pages(
if ( is_pv_32bit_domain(d) )
avail -= d->max_vcpus - 1;
- /* Reserve memory for iommu_dom0_init() (rough estimate). */
+ /* Reserve memory for iommu_dom0_init(). */
if ( iommu_enabled )
- {
- unsigned int s;
-
- for ( s = 9; s < BITS_PER_LONG; s += 9 )
- avail -= max_pdx >> s;
- }
+ avail -= dom0_paging_pages(d, max_pdx);
need_paging = is_hvm_domain(d) &&
(!iommu_hap_pt_share || !paging_mode_hap(d));
--
2.13.5 (Apple Git-94)
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