linux-kernel - [tip: x86/vmware] ptp/vmware: Use VMware hypercall API

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Date: Sat, 15 Jun 2024 08:21:46 -0000
From: "tip-bot2 for Alexey Makhalov" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Alexey Makhalov <alexey.makhalov@...adcom.com>,
 "Borislav Petkov (AMD)" <bp@...en8.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/vmware] ptp/vmware: Use VMware hypercall API

The following commit has been merged into the x86/vmware branch of tip:

Commit-ID:     f8f9c6e7e54517213f48a7bb5cce8c5f41d5c4b8
Gitweb:        https://git.kernel.org/tip/f8f9c6e7e54517213f48a7bb5cce8c5f41d5c4b8
Author:        Alexey Makhalov <alexey.makhalov@...adcom.com>
AuthorDate:    Thu, 13 Jun 2024 12:16:44 -07:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Fri, 14 Jun 2024 18:01:21 +02:00

ptp/vmware: Use VMware hypercall API

Switch from VMWARE_HYPERCALL macro to vmware_hypercall API.
Eliminate arch specific code. No functional changes intended.

Signed-off-by: Alexey Makhalov <alexey.makhalov@...adcom.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Link: https://lore.kernel.org/r/20240613191650.9913-3-alexey.makhalov@broadcom.com
---
 drivers/ptp/ptp_vmw.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/ptp/ptp_vmw.c b/drivers/ptp/ptp_vmw.c
index 7ec9035..20ab05c 100644
--- a/drivers/ptp/ptp_vmw.c
+++ b/drivers/ptp/ptp_vmw.c
@@ -14,7 +14,6 @@
 #include <asm/hypervisor.h>
 #include <asm/vmware.h>
 
-#define VMWARE_MAGIC 0x564D5868
 #define VMWARE_CMD_PCLK(nr) ((nr << 16) | 97)
 #define VMWARE_CMD_PCLK_GETTIME VMWARE_CMD_PCLK(0)
 
@@ -24,15 +23,10 @@ static struct ptp_clock *ptp_vmw_clock;
 
 static int ptp_vmw_pclk_read(u64 *ns)
 {
-	u32 ret, nsec_hi, nsec_lo, unused1, unused2, unused3;
-
-	asm volatile (VMWARE_HYPERCALL :
-		"=a"(ret), "=b"(nsec_hi), "=c"(nsec_lo), "=d"(unused1),
-		"=S"(unused2), "=D"(unused3) :
-		"a"(VMWARE_MAGIC), "b"(0),
-		"c"(VMWARE_CMD_PCLK_GETTIME), "d"(0) :
-		"memory");
+	u32 ret, nsec_hi, nsec_lo;
 
+	ret = vmware_hypercall3(VMWARE_CMD_PCLK_GETTIME, 0,
+				&nsec_hi, &nsec_lo);
 	if (ret == 0)
 		*ns = ((u64)nsec_hi << 32) | nsec_lo;
 	return ret;