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* [Qemu-devel] Fix cacheline size retrieval on FreeBSD/PowerPC(64)
@ 2019-06-07 18:56 Justin Hibbits
  2019-06-26 16:14 ` [Qemu-devel] [Qemu-trivial] " Laurent Vivier
  0 siblings, 1 reply; 14+ messages in thread
From: Justin Hibbits @ 2019-06-07 18:56 UTC (permalink / raw)
  To: qemu-devel; +Cc: qemu-trivial

[-- Attachment #1: Type: text/plain, Size: 139 bytes --]

The attached very trivial patch fixes a startup bug that prevents at
least Qemu 3.1 and later from working on FreeBSD/powerpc64.

- Justin

[-- Attachment #2: 0001-Fix-cacheline-detection-on-FreeBSD-powerpc.patch --]
[-- Type: text/x-patch, Size: 1089 bytes --]

From 74a70fdcfa5347e7637aa36276c55781f19de72a Mon Sep 17 00:00:00 2001
From: Justin Hibbits <chmeeedalf@gmail.com>
Date: Fri, 7 Jun 2019 13:44:51 -0500
Subject: [PATCH] Fix cacheline detection on FreeBSD/powerpc.

machdep.cacheline_size is an integer, not a long.  Since PowerPC is
big-endian this causes sysctlbyname() to fill in the upper bits of the
argument, rather than the correct 'lower bits' of the word.  Specify the
correct type to fix this.

Signed-off-by: Justin Hibbits <chmeeedalf@gmail.com>
---
 util/cacheinfo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util/cacheinfo.c b/util/cacheinfo.c
index eebe1ce9c5..516f837748 100644
--- a/util/cacheinfo.c
+++ b/util/cacheinfo.c
@@ -77,7 +77,7 @@ static void sys_cache_info(int *isize, int *dsize)
 static void sys_cache_info(int *isize, int *dsize)
 {
     /* There's only a single sysctl for both I/D cache line sizes.  */
-    long size;
+    int size;
     size_t len = sizeof(size);
     if (!sysctlbyname(SYSCTL_CACHELINE_NAME, &size, &len, NULL, 0)) {
         *isize = *dsize = size;
-- 
2.21.0


^ permalink raw reply related	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2019-07-02 22:14 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-06-07 18:56 [Qemu-devel] Fix cacheline size retrieval on FreeBSD/PowerPC(64) Justin Hibbits
2019-06-26 16:14 ` [Qemu-devel] [Qemu-trivial] " Laurent Vivier
2019-06-26 16:16   ` Laurent Vivier
2019-06-26 16:37     ` Justin Hibbits
2019-06-26 16:47       ` Laurent Vivier
2019-06-26 18:04         ` Justin Hibbits
2019-06-27  0:02           ` Justin Hibbits
2019-06-27  0:08             ` Laurent Vivier
2019-06-27  0:15               ` Justin Hibbits
2019-07-01  8:54                 ` Laurent Vivier
2019-07-01 13:02                   ` Justin Hibbits
2019-07-01 13:17                     ` Laurent Vivier
2019-07-02 22:11                       ` Justin Hibbits
2019-07-01 14:08       ` Christophe de Dinechin

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