[Xen-devel] [PATCH v4 7/8] x86: be more verbose when running on a hypervisor

[Wei Liu <wl@xxxxxxx>]

Also replace xen_guest with running_on_hypervisor boolean.

Signed-off-by: Wei Liu <liuwe@xxxxxxxxxxxxx>
---
Changes in v4:
1. Access ->name directly.
2. Drop Roger's review tag.
---
 xen/arch/x86/setup.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 19606d909b..123436b35a 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -689,6 +689,7 @@ void __init noreturn __start_xen(unsigned long mbi_p)
     int i, j, e820_warn = 0, bytes = 0;
     bool acpi_boot_table_init_done = false, relocated = false;
     int ret;
+    bool running_on_hypervisor;
     struct ns16550_defaults ns16550 = {
         .data_bits = 8,
         .parity    = 'n',
@@ -763,7 +764,7 @@ void __init noreturn __start_xen(unsigned long mbi_p)
      * allocing any xenheap structures wanted in lower memory. */
     kexec_early_calculations();
 
-    hypervisor_probe();
+    running_on_hypervisor = !!hypervisor_probe();
 
     parse_video_info();
 
@@ -788,6 +789,8 @@ void __init noreturn __start_xen(unsigned long mbi_p)
     printk("Command line: %s\n", cmdline);
 
     printk("Xen image load base address: %#lx\n", xen_phys_start);
+    if ( running_on_hypervisor )
+        printk("Running on %s\n", hypervisor_probe()->name);
 
 #ifdef CONFIG_VIDEO
     printk("Video information:\n");
@@ -1569,7 +1572,7 @@ void __init noreturn __start_xen(unsigned long mbi_p)
             max_cpus = nr_cpu_ids;
     }
 
-    if ( xen_guest )
+    if ( running_on_hypervisor )
         hypervisor_setup();
 
     /* Low mappings were only needed for some BIOS table parsing. */
-- 
2.20.1


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