diff options
| author | Emilio G. Cota <cota@braap.org> | 2018-09-10 19:27:41 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-02 18:47:55 +0200 |
| commit | 5fe21034292a2758639d6e66822a53770c7bcc0d (patch) | |
| tree | 106e7fde1b2b7b5ef1772c2b098008cb269fb6d3 | |
| parent | 87a09cdc529ddb5daa660e3c442b793032a2169d (diff) | |
cacheinfo: add i/d cache_linesize_log
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180910232752.31565-2-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | include/qemu/osdep.h | 2 | ||||
| -rw-r--r-- | util/cacheinfo.c | 8 |
2 files changed, 10 insertions, 0 deletions
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..6c8fe797bf 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. @@ -172,6 +175,11 @@ static void __attribute__((constructor)) init_cache_info(void) arch_cache_info(&isize, &dsize); fallback_cache_info(&isize, &dsize); + assert((isize & (isize - 1)) == 0); + assert((dsize & (dsize - 1)) == 0); + qemu_icache_linesize = isize; + qemu_icache_linesize_log = ctz32(isize); qemu_dcache_linesize = dsize; + qemu_dcache_linesize_log = ctz32(dsize); } |