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[PATCH v3 2/3] x86/vmware: Add basic paravirt ops support

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Add basic paravirt support:
 1. set pv_info.name to "VMware hypervisor" to have proper boot log message
	Booting paravirtualized kernel on VMware hypervisor
    instead of "... on bare hardware"
 2. set pv_cpu_ops.io_delay() to empty function - paravirt_nop() to
    avoid vm-exits on IO delays.

Signed-off-by: Alexey Makhalov <amakhalov@vmware.com>
Acked-by: Alok N Kataria <akataria@vmware.com>
---
 arch/x86/kernel/cpu/vmware.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 480790f..098a524 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -61,6 +61,16 @@ static unsigned long vmware_get_tsc_khz(void)
 	return vmware_tsc_khz;
 }
 
+#ifdef CONFIG_PARAVIRT
+static void __init vmware_paravirt_ops_setup(void)
+{
+	pv_info.name = "VMware hypervisor";
+	pv_cpu_ops.io_delay = paravirt_nop;
+}
+#else
+#define vmware_paravirt_ops_setup() do {} while (0)
+#endif
+
 static void __init vmware_platform_setup(void)
 {
 	uint32_t eax, ebx, ecx, edx;
@@ -94,6 +104,8 @@ static void __init vmware_platform_setup(void)
 	} else {
 		pr_warn("Failed to get TSC freq from the hypervisor\n");
 	}
+
+	vmware_paravirt_ops_setup();
 }
 
 /*
-- 
2.10.1

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[RESEND PATCH 1/3] x86/vmware: Use tsc_khz value for calibrate_cpu() Alexey Makhalov <amakhalov@vmware.com> - 2016-10-27 21:50 +0200
  [RESEND PATCH 2/3] x86/vmware: Add basic paravirt ops support Alexey Makhalov <amakhalov@vmware.com> - 2016-10-27 21:50 +0200
  [RESEND PATCH 3/3] x86/vmware: Add paravirt sched clock Alexey Makhalov <amakhalov@vmware.com> - 2016-10-27 21:50 +0200
    Re: [RESEND PATCH 3/3] x86/vmware: Add paravirt sched clock Thomas Gleixner <tglx@linutronix.de> - 2016-10-28 00:20 +0200
  Re: [RESEND PATCH 1/3] x86/vmware: Use tsc_khz value for  calibrate_cpu() Thomas Gleixner <tglx@linutronix.de> - 2016-10-27 23:50 +0200
    [PATCH v3 2/3] x86/vmware: Add basic paravirt ops support Alexey Makhalov <amakhalov@vmware.com> - 2016-10-28 10:00 +0200
      [tip:x86/platform] x86/vmware: Add basic paravirt ops support tip-bot for Alexey Makhalov <tipbot@zytor.com> - 2016-10-31 02:30 +0100
    [PATCH v3 0/3] x86/vmware guest improvements Alexey Makhalov <amakhalov@vmware.com> - 2016-10-28 10:00 +0200
      [PATCH v3 3/3] x86/vmware: Add paravirt sched clock Alexey Makhalov <amakhalov@vmware.com> - 2016-10-28 10:00 +0200
        [tip:x86/platform] x86/vmware: Add paravirt sched clock tip-bot for Alexey Makhalov <tipbot@zytor.com> - 2016-10-31 02:20 +0100
      [PATCH v3 1/3] x86/vmware: Use tsc_khz value for calibrate_cpu() Alexey Makhalov <amakhalov@vmware.com> - 2016-10-28 10:00 +0200
        [tip:x86/platform] x86/vmware: Use tsc_khz value for  calibrate_cpu() tip-bot for Alexey Makhalov <tipbot@zytor.com> - 2016-10-31 02:20 +0100

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