This is necessary for read_cr4() to function correctly. Move the EFER caching
at the same time.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Jan Beulich <jbeul...@suse.com>
CC: Roger Pau Monné <roger....@citrix.com>
CC: Wei Liu <w...@xen.org>
---
xen/arch/x86/setup.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 9bd42a55f94b..141957c9f6a5 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -872,6 +872,9 @@ void __init noreturn __start_xen(unsigned long mbi_p)
/* Full exception support from here on in. */
+ rdmsrl(MSR_EFER, this_cpu(efer));
+ asm volatile ( "mov %%cr4,%0" : "=r" (get_cpu_info()->cr4) );
+
/* Enable NMIs. Our loader (e.g. Tboot) may have left them disabled. */
enable_nmis();
@@ -918,9 +921,6 @@ void __init noreturn __start_xen(unsigned long mbi_p)
parse_video_info();
- rdmsrl(MSR_EFER, this_cpu(efer));
- asm volatile ( "mov %%cr4,%0" : "=r" (get_cpu_info()->cr4) );
-
/* We initialise the serial devices very early so we can get debugging. */
ns16550.io_base = 0x3f8;
ns16550.irq = 4;
--
2.11.0
