- Get rid of the infamous "fpudna in kernel mode" messages on amd64 by

  calling fpudna()/npxdna() directly instead of programmatically invoking
  int 7 (should also speed up the i386 case a tiny little bit that didn't
  print a message) [1]
- Rename kqemu_tss_workaround to kqemu_tss_fixup [2]
- Bump PORTREVISION

Looked over by:	bde [1]
Prodded by:	jhb [2]

3 files changed, 87 insertions, 9 deletions

diff --git a/emulators/kqemu-kmod-devel/Makefile b/emulators/kqemu-kmod-devel/Makefile
index 872b199a6eff..955ea30159b1 100644
--- a/emulators/kqemu-kmod-devel/Makefile
+++ b/emulators/kqemu-kmod-devel/Makefile
@@ -7,7 +7,7 @@
 
 PORTNAME=	kqemu
 PORTVERSION=	1.3.0.p11
-PORTREVISION=	4
+PORTREVISION=	5
 CATEGORIES=	emulators kld
 MASTER_SITES=	http://fabrice.bellard.free.fr/qemu/ \
 		http://qemu.org/ \
diff --git a/emulators/kqemu-kmod-devel/files/patch-fpucontext b/emulators/kqemu-kmod-devel/files/patch-fpucontext
new file mode 100644
index 000000000000..186d131da2b2
--- /dev/null
+++ b/emulators/kqemu-kmod-devel/files/patch-fpucontext
@@ -0,0 +1,78 @@
+Index: common/kernel.c
+@@ -1240,6 +1240,11 @@
+             case MON_REQ_EXCEPTION:
+                 exec_exception(s->arg0);
+                 break;
++#ifdef __FreeBSD__
++            case MON_REQ_LOADFPUCONTEXT:
++                kqemu_loadfpucontext(s->arg0);
++                break;
++#endif
+             default:
+                 kqemu_log("invalid mon request: %d\n", s->mon_req);
+                 break;
+Index: common/kqemu_int.h
+@@ -523,6 +523,7 @@
+     MON_REQ_LOCK_USER_PAGE,
+     MON_REQ_UNLOCK_USER_PAGE,
+     MON_REQ_EXCEPTION,
++    MON_REQ_LOADFPUCONTEXT,
+ } MonitorRequest;
+ 
+ #define INTERRUPT_ENTRY_SIZE 16
+Index: common/monitor.c
+@@ -1995,8 +1995,13 @@
+         raise_exception_err(s, EXCP07_PREX, 0);
+     } else {
+         /* the host needs to restore the FPU state for us */
++#ifndef __FreeBSD__
+         s->mon_req = MON_REQ_EXCEPTION;
+         s->arg0 = 0x07;
++#else
++        s->mon_req = MON_REQ_LOADFPUCONTEXT;
++        s->arg0 = (unsigned long)s->cpu_state.cpl;
++#endif
+         monitor2kernel1(s);
+     }
+ }
+Index: kqemu-freebsd.c
+@@ -33,6 +33,11 @@
+ 
+ #include <machine/vmparam.h>
+ #include <machine/stdarg.h>
++#ifdef __x86_64__
++#include <machine/fpu.h>
++#else
++#include <machine/npx.h>
++#endif
+ 
+ #include "kqemu-kernel.h"
+ 
+@@ -172,6 +177,15 @@
+ {
+ }
+ 
++void CDECL kqemu_loadfpucontext(unsigned long cpl)
++{
++#ifdef __x86_64__
++    fpudna();
++#else
++    npxdna();
++#endif
++}
++
+ #if __FreeBSD_version < 500000
+ static int
+ curpriority_cmp(struct proc *p)
+Index: kqemu-kernel.h
+@@ -40,6 +40,10 @@
+ void * CDECL kqemu_io_map(unsigned long page_index, unsigned int size);
+ void CDECL kqemu_io_unmap(void *ptr, unsigned int size);
+ 
++#ifdef __FreeBSD__
++void CDECL kqemu_loadfpucontext(unsigned long cpl);
++#endif
++
+ int CDECL kqemu_schedule(void);
+ 
+ void CDECL kqemu_log(const char *fmt, ...);
diff --git a/emulators/kqemu-kmod-devel/files/patch-tssworkaround b/emulators/kqemu-kmod-devel/files/patch-tssworkaround
index 07185972a889..00638fdd671f 100644
--- a/emulators/kqemu-kmod-devel/files/patch-tssworkaround
+++ b/emulators/kqemu-kmod-devel/files/patch-tssworkaround
@@ -1,8 +1,8 @@
 Index: kqemu-freebsd.c
-@@ -33,6 +33,11 @@
- 
- #include <machine/vmparam.h>
- #include <machine/stdarg.h>
+@@ -38,6 +38,11 @@
+ #else
+ #include <machine/npx.h>
+ #endif
 +#ifdef __x86_64__
 +#include <sys/pcpu.h>
 +#include <machine/segments.h>
@@ -11,13 +11,13 @@ Index: kqemu-freebsd.c
  
  #include "kqemu-kernel.h"
  
-@@ -234,6 +239,19 @@
+@@ -248,6 +253,19 @@
      va_end(ap);
  }
  
 +#ifdef __x86_64__
 +/* called with interrupts disabled */
-+void CDECL kqemu_tss_workaround(void)
++void CDECL kqemu_tss_fixup(void)
 +{
 +    int gsel_tss = GSEL(GPROC0_SEL, SEL_KPL);
 +
@@ -49,7 +49,7 @@ Index: common/kernel.c
 +#ifdef __FreeBSD__
 +#ifdef __x86_64__
 +        spin_lock(&g->lock);
-+        kqemu_tss_workaround();
++        kqemu_tss_fixup();
 +        spin_unlock(&g->lock);
 +#endif
 +#endif
@@ -63,7 +63,7 @@ Index: kqemu-kernel.h
  
 +#ifdef __FreeBSD__
 +#ifdef __x86_64__
-+void CDECL kqemu_tss_workaround(void);
++void CDECL kqemu_tss_fixup(void);
 +#endif
 +#endif
 +