[xen master] x86/time: use public interface TSC mode definitions

[patchbot@xxxxxxx]

commit 6c707d4573f5df2b60503dfeedc10b33cebd60d1
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon Feb 6 16:04:43 2023 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Feb 6 16:04:43 2023 +0100

    x86/time: use public interface TSC mode definitions
    
    Now that they're properly represented in the public interface, let's do
    away with our private #define-s.
    
    No functional change intended.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/domain.c           |  3 ++-
 xen/arch/x86/include/asm/time.h | 14 --------------
 xen/arch/x86/time.c             | 17 +++++++++--------
 3 files changed, 11 insertions(+), 23 deletions(-)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index d7a8237f01..a3c88cd729 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -36,6 +36,7 @@
 #include <xen/wait.h>
 #include <xen/guest_access.h>
 #include <xen/livepatch.h>
+#include <public/arch-x86/cpuid.h>
 #include <public/sysctl.h>
 #include <public/hvm/hvm_vcpu.h>
 #include <asm/regs.h>
@@ -844,7 +845,7 @@ int arch_domain_create(struct domain *d,
     else
         ASSERT_UNREACHABLE(); /* Not HVM and not PV? */
 
-    if ( (rc = tsc_set_info(d, TSC_MODE_DEFAULT, 0, 0, 0)) != 0 )
+    if ( (rc = tsc_set_info(d, XEN_CPUID_TSC_MODE_DEFAULT, 0, 0, 0)) != 0 )
     {
         ASSERT_UNREACHABLE();
         goto fail;
diff --git a/xen/arch/x86/include/asm/time.h b/xen/arch/x86/include/asm/time.h
index dc2e636916..0d7989a1fe 100644
--- a/xen/arch/x86/include/asm/time.h
+++ b/xen/arch/x86/include/asm/time.h
@@ -4,20 +4,6 @@
 
 #include <asm/msr.h>
 
-/*
- *  PV TSC emulation modes:
- *    0 = guest rdtsc/p executed natively when monotonicity can be guaranteed
- *         and emulated otherwise (with frequency scaled if necessary)
- *    1 = guest rdtsc/p always emulated at 1GHz (kernel and user)
- *    2 = guest rdtsc always executed natively (no monotonicity/frequency
- *         guarantees); guest rdtscp emulated at native frequency if
- *         unsupported by h/w, else executed natively
- *    3 = Removed, was PVRDTSCP.
- */
-#define TSC_MODE_DEFAULT          0
-#define TSC_MODE_ALWAYS_EMULATE   1
-#define TSC_MODE_NEVER_EMULATE    2
-
 typedef u64 cycles_t;
 
 extern bool disable_tsc_sync;
diff --git a/xen/arch/x86/time.c b/xen/arch/x86/time.c
index 7bee4f784f..782b11c8a9 100644
--- a/xen/arch/x86/time.c
+++ b/xen/arch/x86/time.c
@@ -2545,13 +2545,13 @@ void tsc_get_info(struct domain *d, uint32_t *tsc_mode,
     {
         uint64_t tsc;
 
-    case TSC_MODE_NEVER_EMULATE:
+    case XEN_CPUID_TSC_MODE_NEVER_EMULATE:
         *elapsed_nsec = *gtsc_khz = 0;
         break;
-    case TSC_MODE_DEFAULT:
+    case XEN_CPUID_TSC_MODE_DEFAULT:
         if ( d->arch.vtsc )
         {
-    case TSC_MODE_ALWAYS_EMULATE:
+    case XEN_CPUID_TSC_MODE_ALWAYS_EMULATE:
             *elapsed_nsec = get_s_time() - d->arch.vtsc_offset;
             *gtsc_khz = d->arch.tsc_khz;
             break;
@@ -2588,8 +2588,8 @@ int tsc_set_info(struct domain *d,
 
     switch ( tsc_mode )
     {
-    case TSC_MODE_DEFAULT:
-    case TSC_MODE_ALWAYS_EMULATE:
+    case XEN_CPUID_TSC_MODE_DEFAULT:
+    case XEN_CPUID_TSC_MODE_ALWAYS_EMULATE:
         d->arch.vtsc_offset = get_s_time() - elapsed_nsec;
         d->arch.tsc_khz = gtsc_khz ?: cpu_khz;
         set_time_scale(&d->arch.vtsc_to_ns, d->arch.tsc_khz * 1000UL);
@@ -2601,12 +2601,12 @@ int tsc_set_info(struct domain *d,
          * When a guest is created, gtsc_khz is passed in as zero, making
          * d->arch.tsc_khz == cpu_khz. Thus no need to check incarnation.
          */
-        if ( tsc_mode == TSC_MODE_DEFAULT && host_tsc_is_safe() &&
+        if ( tsc_mode == XEN_CPUID_TSC_MODE_DEFAULT && host_tsc_is_safe() &&
              (d->arch.tsc_khz == cpu_khz ||
               (is_hvm_domain(d) &&
                hvm_get_tsc_scaling_ratio(d->arch.tsc_khz))) )
         {
-    case TSC_MODE_NEVER_EMULATE:
+    case XEN_CPUID_TSC_MODE_NEVER_EMULATE:
             d->arch.vtsc = 0;
             break;
         }
@@ -2674,7 +2674,8 @@ static void cf_check dump_softtsc(unsigned char key)
 
     for_each_domain ( d )
     {
-        if ( is_hardware_domain(d) && d->arch.tsc_mode == TSC_MODE_DEFAULT )
+        if ( is_hardware_domain(d) &&
+             d->arch.tsc_mode == XEN_CPUID_TSC_MODE_DEFAULT )
             continue;
         printk("dom%u%s: mode=%d",d->domain_id,
                 is_hvm_domain(d) ? "(hvm)" : "", d->arch.tsc_mode);
--
generated by git-patchbot for /home/xen/git/xen.git#master