[PATCH v3 03/16] x86/sev: Replace call of native_wrmsr() with native_wrmsrq()

[Juergen Gross]

In sev_es_wr_ghcb_msr() the 64 bit MSR value is split into 2 32 bit
values in order to call native_wrmsr(), which will combine the values
into a 64 bit value again.

Just use native_wrmsrq() instead.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Nikunj A Dadhania <nikunj@xxxxxxx>
Reviewed-by: H. Peter Anvin (Intel) <hpa@xxxxxxxxx>
---
V2:
- new patch
---
 arch/x86/coco/sev/internal.h | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/arch/x86/coco/sev/internal.h b/arch/x86/coco/sev/internal.h
index b1d0c66a651a..7b76d779a722 100644
--- a/arch/x86/coco/sev/internal.h
+++ b/arch/x86/coco/sev/internal.h
@@ -77,12 +77,7 @@ static inline u64 sev_es_rd_ghcb_msr(void)
 
 static __always_inline void sev_es_wr_ghcb_msr(u64 val)
 {
-	u32 low, high;
-
-	low  = (u32)(val);
-	high = (u32)(val >> 32);
-
-	native_wrmsr(MSR_AMD64_SEV_ES_GHCB, low, high);
+	native_wrmsrq(MSR_AMD64_SEV_ES_GHCB, val);
 }
 
 enum es_result __vc_handle_msr(struct ghcb *ghcb, struct es_em_ctxt *ctxt, bool write);
-- 
2.53.0