There is no need for struct vcpu to live below the 4G boundary if shadow
paging is compiled out.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Jan Beulich <jbeul...@suse.com>
CC: Wei Liu <wei.l...@citrix.com>
CC: George Dunlap <george.dun...@eu.citrix.com>
CC: Tim Deegan <t...@xen.org>
---
xen/arch/x86/domain.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 943f95b..35cfa24 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -311,8 +311,11 @@ struct vcpu *alloc_vcpu_struct(void)
* may require that the shadow CR3 points below 4GB, and hence the whole
* structure must satisfy this restriction. Thus we specify MEMF_bits(32).
*/
+ unsigned int memflags =
+ IS_ENABLED(CONFIG_SHADOW_PAGING) ? MEMF_bits(32) : 0;
+
BUILD_BUG_ON(sizeof(*v) > PAGE_SIZE);
- v = alloc_xenheap_pages(0, MEMF_bits(32));
+ v = alloc_xenheap_pages(0, memflags);
if ( v != NULL )
clear_page(v);
return v;
--
2.1.4
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