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[Qemu-devel] [PATCH v2 01/12] cacheinfo: add i/d cache_linesize_log
From: |
Emilio G. Cota |
Subject: |
[Qemu-devel] [PATCH v2 01/12] cacheinfo: add i/d cache_linesize_log |
Date: |
Mon, 10 Sep 2018 19:27:41 -0400 |
Signed-off-by: Emilio G. Cota <address@hidden>
---
include/qemu/osdep.h | 2 ++
util/cacheinfo.c | 5 +++++
2 files changed, 7 insertions(+)
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index a91068df0e..a746a5e531 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -570,6 +570,8 @@ extern uintptr_t qemu_real_host_page_size;
extern intptr_t qemu_real_host_page_mask;
extern int qemu_icache_linesize;
+extern int qemu_icache_linesize_log;
extern int qemu_dcache_linesize;
+extern int qemu_dcache_linesize_log;
#endif
diff --git a/util/cacheinfo.c b/util/cacheinfo.c
index db5172d07c..57c7d58159 100644
--- a/util/cacheinfo.c
+++ b/util/cacheinfo.c
@@ -7,9 +7,12 @@
*/
#include "qemu/osdep.h"
+#include "qemu/host-utils.h"
int qemu_icache_linesize = 0;
+int qemu_icache_linesize_log;
int qemu_dcache_linesize = 0;
+int qemu_dcache_linesize_log;
/*
* Operating system specific detection mechanisms.
@@ -173,5 +176,7 @@ static void __attribute__((constructor))
init_cache_info(void)
fallback_cache_info(&isize, &dsize);
qemu_icache_linesize = isize;
+ qemu_icache_linesize_log = 31 - clz32(isize);
qemu_dcache_linesize = dsize;
+ qemu_dcache_linesize_log = 31 - clz32(dsize);
}
--
2.17.1
- [Qemu-devel] [PATCH v2 00/12] i386 + x86_64 mttcg, Emilio G. Cota, 2018/09/10
- [Qemu-devel] [PATCH v2 09/12] cpus: access .qemu_icount with atomic64, Emilio G. Cota, 2018/09/10
- [Qemu-devel] [PATCH v2 11/12] target/i386/translate: use thread-local storage in !user-mode, Emilio G. Cota, 2018/09/10
- [Qemu-devel] [PATCH v2 10/12] cpus: access .qemu_icount_bias with atomic64, Emilio G. Cota, 2018/09/10
- [Qemu-devel] [PATCH v2 12/12] configure: enable mttcg for i386 and x86_64, Emilio G. Cota, 2018/09/10
- [Qemu-devel] [PATCH v2 01/12] cacheinfo: add i/d cache_linesize_log,
Emilio G. Cota <=
- [Qemu-devel] [PATCH v2 02/12] util: add atomic64, Emilio G. Cota, 2018/09/10