[PATCH 0/3] kvm-userspace: ppc: userspace fixes for powerpc

[PATCH 0/3] kvm-userspace: ppc: userspace fixes for powerpc

[ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8]

From: Christian Ehrhardt <ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>

This is a set of fixes for the powerpc tests kvm-userspace/user.

Patch 1&2 fix main-ppc.c while patch 3 introduces libcflat for powerpc.
Further on patch 4 provides a timebase accessor for the ppc testcases (not
used yet) and patch 5 finally adds a stub nmi handler to main-ppc.c.

[patches in series]
[PATCH 1/5] user: ppc: fix threading bugs in main-ppc.c
[PATCH 2/5] user: ppc: better error reporting in load_file
[PATCH 3/5] user: ppc: implement PowerPC 44x libcflat
[PATCH 4/5] libcflat: ppc: add timebase accessor
[PATCH 5/5] user: ppc: add stub nmi handler

---
[diffstat]
 b/user/config-powerpc-44x.mak          |   14 +++++++++
 b/user/config-powerpc.mak              |   46 ++++++++++++++++++++---------
 b/user/main-ppc.c                      |   32 +++++++-------------
 b/user/test/lib/powerpc/44x/map.c      |   51 +++++++++++++++++++++++++++++++++
 b/user/test/lib/powerpc/44x/timebase.S |   28 ++++++++++++++++++
 b/user/test/lib/powerpc/44x/timebase.h |   25 ++++++++++++++++
 b/user/test/lib/powerpc/44x/tlbwe.S    |   29 ++++++++++++++++++
 b/user/test/lib/powerpc/io.c           |   35 ++++++++++++++++++++++
 b/user/test/powerpc/cstart.S           |   38 ++++++++++++++++++++++++
 b/user/test/powerpc/exit.c             |   23 ++++++++++++++
 user/config-powerpc-44x.mak            |    3 +
 user/main-ppc.c                        |    9 +++++
 12 files changed, 296 insertions(+), 37 deletions(-)
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[PATCH 1/5] user: ppc: fix threading bugs in main-ppc.c

[ehrhardt]

From: Hollis Blanchard <hollisb@us.ibm.com>

- call io_table_register() before any vcpus have started
- wait for all vcpus to exit before exiting the parent thread

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
---

[diffstat]
 main-ppc.c |   32 ++++++++++++--------------------
 1 file changed, 12 insertions(+), 20 deletions(-)

[diff]
diff --git a/user/main-ppc.c b/user/main-ppc.c
--- a/user/main-ppc.c
+++ b/user/main-ppc.c
@@ -51,7 +51,7 @@ struct io_table mmio_table;
 struct io_table mmio_table;
 
 static int ncpus = 1;
-static sem_t init_sem;
+static sem_t exited_sem;
 static __thread int vcpu;
 static sigset_t kernel_sigmask;
 static sigset_t ipi_sigmask;
@@ -220,16 +220,8 @@ void sync_caches(void *mem, unsigned lon
 	asm volatile ("sync; isync");
 }
 
-static void init_vcpu(int n, unsigned long entry)
+static void init_vcpu(int n)
 {
-	/* XXX must set initial TLB state and stack
-	struct kvm_regs regs = {
-		.pc = entry,
-	};
-
-	kvm_set_regs(kvm, 0, &regs);
-	*/
-
 	sigemptyset(&ipi_sigmask);
 	sigaddset(&ipi_sigmask, IPI_SIGNAL);
 	sigprocmask(SIG_UNBLOCK, &ipi_sigmask, NULL);
@@ -237,7 +229,6 @@ static void init_vcpu(int n, unsigned lo
 	vcpus[n].tid = gettid();
 	vcpu = n;
 	kvm_set_signal_mask(kvm, n, &kernel_sigmask);
-	sem_post(&init_sem);
 }
 
 static void *do_create_vcpu(void *_n)
@@ -245,8 +236,9 @@ static void *do_create_vcpu(void *_n)
 	int n = (long)_n;
 
 	kvm_create_vcpu(kvm, n);
-	init_vcpu(n, 0x0);
+	init_vcpu(n);
 	kvm_run(kvm, n);
+	sem_post(&exited_sem);
 	return NULL;
 }
 
@@ -368,14 +360,14 @@ int main(int argc, char **argv)
 	len = load_file(vm_mem, argv[optind], 1);
 	sync_caches(vm_mem, len);
 
-	sem_init(&init_sem, 0, 0);
-	init_vcpu(0, 0x0);
-	for (i = 1; i < ncpus; ++i)
-		start_vcpu(i);
-	for (i = 0; i < ncpus; ++i)
-		sem_wait(&init_sem);
-
 	io_table_register(&mmio_table, 0xf0000000, 64, mmio_handler, NULL);
 
-	return kvm_run(kvm, 0);
+	sem_init(&exited_sem, 0, 0);
+	for (i = 0; i < ncpus; ++i)
+		start_vcpu(i);
+	/* Wait for all vcpus to exit. */
+	for (i = 0; i < ncpus; ++i)
+		sem_wait(&exited_sem);
+
+	return 0;
 }

[PATCH 2/5] user: ppc: better error reporting in load_file

[ehrhardt]

From: Hollis Blanchard <hollisb@us.ibm.com>

Fancy description.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
---

[diffstat]
 main-ppc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

[diff]
diff --git a/user/main-ppc.c b/user/main-ppc.c
--- a/user/main-ppc.c
+++ b/user/main-ppc.c
@@ -183,7 +183,7 @@ static struct kvm_callbacks test_callbac
 
 static unsigned long load_file(void *mem, const char *fname, int inval_icache)
 {
-	int r;
+	ssize_t r;
 	int fd;
 	unsigned long bytes = 0;
 
@@ -200,6 +200,7 @@ static unsigned long load_file(void *mem
 
 	if (r == -1) {
 		perror("read");
+		printf("read %d bytes\n", bytes);
 		exit(1);
 	}
 

[PATCH 3/5] user: ppc: implement PowerPC 44x libcflat

[ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8]

From: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>

- Create a 44x-specific makefile.
- Reorganize PowerPC makefiles to separate "simple" tests from those which
  link with libcflat.
- Create a minimal libcflat testcase (which just exits).

Signed-off-by: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Christian Ehrhardt <ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---

[diffstat]
 config-powerpc-44x.mak       |   14 +++++++++++
 config-powerpc.mak           |   46 ++++++++++++++++++++++++++------------
 test/lib/powerpc/44x/map.c   |   51 +++++++++++++++++++++++++++++++++++++++++++
 test/lib/powerpc/44x/tlbwe.S |   29 ++++++++++++++++++++++++
 test/lib/powerpc/io.c        |   35 +++++++++++++++++++++++++++++
 test/powerpc/cstart.S        |   38 ++++++++++++++++++++++++++++++++
 test/powerpc/exit.c          |   23 +++++++++++++++++++
 7 files changed, 221 insertions(+), 15 deletions(-)

[diff]

diff --git a/user/config-powerpc-44x.mak b/user/config-powerpc-44x.mak
new file mode 100644
--- /dev/null
+++ b/user/config-powerpc-44x.mak
@@ -0,0 +1,14 @@
+
+
+# for some reason binutils hates tlbsx unless we say we're 405  :(
+CFLAGS += -Wa,-m405 -I test/lib/powerpc/44x
+
+cflatobjs += \
+	test/lib/powerpc/44x/map.o \
+	test/lib/powerpc/44x/tlbwe.o
+
+simpletests += \
+	test/powerpc/44x/tlbsx.bin \
+	test/powerpc/44x/tlbwe_16KB.bin \
+	test/powerpc/44x/tlbwe_hole.bin \
+	test/powerpc/44x/tlbwe.bin
diff --git a/user/config-powerpc.mak b/user/config-powerpc.mak
--- a/user/config-powerpc.mak
+++ b/user/config-powerpc.mak
@@ -1,26 +1,42 @@
+platform := 44x
+
 CFLAGS += -m32
 CFLAGS += -D__powerpc__
 CFLAGS += -I $(KERNELDIR)/include
-# for some reaons binutils hates tlbsx unless we say we're 405  :(
-CFLAGS += -Wa,-mregnames,-m405
+CFLAGS += -Wa,-mregnames -I test/lib
 
-%.bin: %.o
-	$(OBJCOPY) -O binary $^ $@
+cstart := test/powerpc/cstart.o
 
-testobjs := \
-	io.bin \
-	spin.bin \
-	sprg.bin \
-	44x/tlbsx.bin \
-	44x/tlbwe_16KB.bin \
-	44x/tlbwe_hole.bin \
-	44x/tlbwe.bin
+cflatobjs += \
+	test/lib/powerpc/io.o
 
-tests := $(addprefix test/powerpc/, $(testobjs))
+$(libcflat): LDFLAGS += -nostdlib
+$(libcflat): CFLAGS += -ffreestanding
 
-all: kvmtrace kvmctl $(tests)
+# these tests do not use libcflat
+simpletests := \
+	test/powerpc/spin.bin \
+	test/powerpc/io.bin \
+	test/powerpc/sprg.bin
+
+# theses tests use cstart.o, libcflat, and libgcc
+tests := \
+	test/powerpc/exit.bin
+
+include config-powerpc-$(platform).mak
+
+
+all: kvmtrace kvmctl $(libcflat) $(simpletests) $(tests)
+
+$(simpletests): %.bin: %.o
+	$(CC) -nostdlib $^ -Wl,-T,flat.lds -o $@
+
+$(tests): %.bin: $(cstart) %.o $(libcflat)
+	$(CC) -nostdlib $^ $(libgcc) -Wl,-T,flat.lds -o $@
 
 kvmctl_objs = main-ppc.o iotable.o ../libkvm/libkvm.a
 
 arch_clean:
-	rm -f $(tests)
+	$(RM) $(simpletests) $(tests) $(cstart)
+	$(RM) $(patsubst %.bin, %.elf, $(simpletests) $(tests))
+	$(RM) $(patsubst %.bin, %.o, $(simpletests) $(tests))
diff --git a/user/test/lib/powerpc/44x/map.c b/user/test/lib/powerpc/44x/map.c
new file mode 100644
--- /dev/null
+++ b/user/test/lib/powerpc/44x/map.c
@@ -0,0 +1,51 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
+ */
+
+#include "libcflat.h"
+
+#define TLB_SIZE 64
+
+extern void tlbwe(unsigned int index,
+		  unsigned char tid,
+		  unsigned int word0,
+		  unsigned int word1,
+		  unsigned int word2);
+
+unsigned int next_free_index;
+
+#define PAGE_SHIFT 12
+#define PAGE_MASK (~((1<<PAGE_SHIFT)-1))
+
+#define V (1<<9)
+
+void map(unsigned long vaddr, unsigned long paddr)
+{
+	unsigned int w0, w1, w2;
+
+	/* We don't install exception handlers, so we can't handle TLB misses,
+	 * so we can't loop around and overwrite entry 0. */
+	if (next_free_index++ >= TLB_SIZE)
+		panic("TLB overflow");
+
+	w0 = (vaddr & PAGE_MASK) | V;
+	w1 = paddr & PAGE_MASK;
+	w2 = 0x3;
+
+	tlbwe(next_free_index, 0, w0, w1, w2);
+}
diff --git a/user/test/lib/powerpc/44x/tlbwe.S b/user/test/lib/powerpc/44x/tlbwe.S
new file mode 100644
--- /dev/null
+++ b/user/test/lib/powerpc/44x/tlbwe.S
@@ -0,0 +1,29 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
+ */
+
+#define SPRN_MMUCR 0x3b2
+
+/* tlbwe(uint index, uint8_t tid, uint word0, uint word1, uint word2) */
+.global tlbwe
+tlbwe:
+	mtspr	SPRN_MMUCR, r4
+	tlbwe	r5, r3, 0
+	tlbwe	r6, r3, 1
+	tlbwe	r7, r3, 2
+	blr
diff --git a/user/test/lib/powerpc/io.c b/user/test/lib/powerpc/io.c
new file mode 100644
--- /dev/null
+++ b/user/test/lib/powerpc/io.c
@@ -0,0 +1,35 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
+ */
+
+#include "libcflat.h"
+
+#define BASE 0xf0000000
+#define _putc ((volatile char *)(BASE))
+#define _exit ((volatile char *)(BASE+1))
+
+void puts(const char *s)
+{
+	while (*s != '\0')
+		*_putc = *s++;
+}
+
+void exit(int code)
+{
+	*_exit = code;
+}
diff --git a/user/test/powerpc/cstart.S b/user/test/powerpc/cstart.S
new file mode 100644
--- /dev/null
+++ b/user/test/powerpc/cstart.S
@@ -0,0 +1,38 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
+ */
+
+#define OUTPUT_VADDR 0xf0000000
+#define OUTPUT_PADDR 0xf0000000
+
+.globl _start
+_start:
+	/* In the future we might need to assign a stack and zero BSS here. */
+
+	/* Map the debug page 1:1. */
+	lis	r3, OUTPUT_VADDR@h
+	ori	r3, r3, OUTPUT_VADDR@l
+	lis	r4, OUTPUT_PADDR@h
+	ori	r4, r4, OUTPUT_PADDR@l
+	bl	map
+
+	/* Call main() and pass return code to exit(). */
+	bl	main
+	bl	exit
+
+	b	.
diff --git a/user/test/powerpc/exit.c b/user/test/powerpc/exit.c
new file mode 100644
--- /dev/null
+++ b/user/test/powerpc/exit.c
@@ -0,0 +1,23 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
+ */
+
+int main(void)
+{
+	return 1;
+}
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[PATCH 5/5] user: ppc: add stub nmi handler

[ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8]

From: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>

Adding a nmi stub handler for user/main-ppc.c. We already pushed a stub
for qemu but not for the test suite in the user dir.

Signed-off-by: Hollis Blanchard <hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Christian Ehrhardt <ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---

[diffstat]
 main-ppc.c |    6 ++++++
 1 file changed, 6 insertions(+)

[diff]
diff --git a/user/main-ppc.c b/user/main-ppc.c
--- a/user/main-ppc.c
+++ b/user/main-ppc.c
@@ -83,6 +83,11 @@ static int test_io_window(void *opaque)
 }
 
 static int test_try_push_interrupts(void *opaque)
+{
+	return 0;
+}
+
+static int test_try_push_nmi(void *opaque)
 {
 	return 0;
 }
@@ -175,6 +180,7 @@ static struct kvm_callbacks test_callbac
 	.halt        = test_halt,
 	.io_window = test_io_window,
 	.try_push_interrupts = test_try_push_interrupts,
+	.try_push_nmi = test_try_push_nmi,
 	.post_kvm_run = test_post_kvm_run,
 	.pre_kvm_run = test_pre_kvm_run,
 	.powerpc_dcr_read = test_dcr_read,
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Re: [PATCH 0/3] kvm-userspace: ppc: userspace fixes for powerpc

[Christian Ehrhardt]

Ok I should have send these two series with some minutes in between to 
not intermix them :-/
Additionally I have the wrong header in this one it should be [0/5] :-/++

Overall it is a patch series of three patches for powerpc kvm-userspace, 
a five patch series for kvm-suerspace/user/ and a single patch I just 
submitted while cleaning our userspace repo to get the missing things 
upstream.

Avi, let me know if I confused you and I'll send them once again with 
some time in between to order them easier.

ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org wrote:
> From: Christian Ehrhardt <ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
>
> This is a set of fixes for the powerpc tests kvm-userspace/user.
>
> Patch 1&2 fix main-ppc.c while patch 3 introduces libcflat for powerpc.
> Further on patch 4 provides a timebase accessor for the ppc testcases (not
> used yet) and patch 5 finally adds a stub nmi handler to main-ppc.c.
>
> [patches in series]
> [PATCH 1/5] user: ppc: fix threading bugs in main-ppc.c
> [PATCH 2/5] user: ppc: better error reporting in load_file
> [PATCH 3/5] user: ppc: implement PowerPC 44x libcflat
> [PATCH 4/5] libcflat: ppc: add timebase accessor
> [PATCH 5/5] user: ppc: add stub nmi handler
>
> ---
> [diffstat]
>  b/user/config-powerpc-44x.mak          |   14 +++++++++
>  b/user/config-powerpc.mak              |   46 ++++++++++++++++++++---------
>  b/user/main-ppc.c                      |   32 +++++++-------------
>  b/user/test/lib/powerpc/44x/map.c      |   51 +++++++++++++++++++++++++++++++++
>  b/user/test/lib/powerpc/44x/timebase.S |   28 ++++++++++++++++++
>  b/user/test/lib/powerpc/44x/timebase.h |   25 ++++++++++++++++
>  b/user/test/lib/powerpc/44x/tlbwe.S    |   29 ++++++++++++++++++
>  b/user/test/lib/powerpc/io.c           |   35 ++++++++++++++++++++++
>  b/user/test/powerpc/cstart.S           |   38 ++++++++++++++++++++++++
>  b/user/test/powerpc/exit.c             |   23 ++++++++++++++
>  user/config-powerpc-44x.mak            |    3 +
>  user/main-ppc.c                        |    9 +++++
>  12 files changed, 296 insertions(+), 37 deletions(-)
> --
> To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>   


-- 

Grüsse / regards, 
Christian Ehrhardt
IBM Linux Technology Center, Open Virtualization

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[PATCH 4/5] libcflat: ppc: add timebase accessor

[ehrhardt]

Provide a timebase accessor for ppc testcases.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>

[diffstat]
 config-powerpc-44x.mak          |    3 ++-
 test/lib/powerpc/44x/timebase.S |   28 ++++++++++++++++++++++++++++
 test/lib/powerpc/44x/timebase.h |   25 +++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 1 deletion(-)

[diff]
diff --git a/user/config-powerpc-44x.mak b/user/config-powerpc-44x.mak
--- a/user/config-powerpc-44x.mak
+++ b/user/config-powerpc-44x.mak
@@ -5,7 +5,8 @@
 
 cflatobjs += \
 	test/lib/powerpc/44x/map.o \
-	test/lib/powerpc/44x/tlbwe.o
+	test/lib/powerpc/44x/tlbwe.o \
+	test/lib/powerpc/44x/timebase.o
 
 simpletests += \
 	test/powerpc/44x/tlbsx.bin \
diff --git a/user/test/lib/powerpc/44x/timebase.S b/user/test/lib/powerpc/44x/timebase.S
new file mode 100644
--- /dev/null
+++ b/user/test/lib/powerpc/44x/timebase.S
@@ -0,0 +1,28 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+/* unsigned long long mftb(void); */
+.global mftb
+mftb:
+	mftbu	r5
+	mftbl 	r4
+	mftbu 	r3
+	cmpw 	r3, r5
+	bne 	mftb
+	blr
diff --git a/user/test/lib/powerpc/44x/timebase.h b/user/test/lib/powerpc/44x/timebase.h
new file mode 100644
--- /dev/null
+++ b/user/test/lib/powerpc/44x/timebase.h
@@ -0,0 +1,25 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+#ifndef __TIMEBASE_H__
+#define __TIMEBASE_H__
+
+unsigned long long mftb(void);
+
+#endif /* __TIMEBASE_H__ */

[PATCH 0/3] kvm-userspace: ppc: userspace fixes for powerpc

[ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8]

From: Christian Ehrhardt <ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>

This is a set of various functional fixes in kvm-userspace for powerpc.

Patch 1 fullfils the requirement to provide a max smp cpu in the machine
 struct, without that value qemu denies to run the guest (cpu 1 > maxcpu 0)

Patch 2 is a intermediate fix to allow ppc (and hopefully all others to
 build) until we changed the unifdef to sed'ing files as avi suggested.
 Until then it would be nice if that patch could fix the build issues for
 all of us in the unifdef style.

Patch3 is a rework of the powerpc 440 guest memory initialization. I looked
 at it because the -m option did not work sometimes but it came up that the
 memory setup is broken and only running due to a workaround.

qemu-devel is on cc for patch 1/3

[patches in series]
[PATCH 1/3] qemu: ppc: define maximum SMP limit as 1 for Bamboo
[PATCH 2/3] kvm: external module: Treat NONARCH_CONFIG as a list
[PATCH 3/3] kvm-userspace: ppc: fix initial ppc memory setup

---
[diffstat]
 b/kernel/Makefile         |    3 ++-
 b/qemu/hw/ppc440.c        |   12 +++++-------
 b/qemu/hw/ppc440.h        |    8 ++++++--
 b/qemu/hw/ppc440_bamboo.c |    7 ++++---
 qemu/hw/ppc440_bamboo.c   |   30 ++++++++++++++++++++----------
 5 files changed, 37 insertions(+), 23 deletions(-)

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