From e947d47da0b16e80d237c510e9d2e80799578c7f Mon Sep 17 00:00:00 2001 From: Stefan Weil Date: Mon, 16 Oct 2017 22:29:12 +0200 Subject: [PATCH] oslib-posix: Fix compiler warning and some data types MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit gcc warning: /qemu/util/oslib-posix.c:304:11: error: variable ‘addr’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered] Fix also some related data types: numpages, hpagesize are used as pointer offset. Always use size_t for them and also for the derived numpages_per_thread and size_per_thread. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Stefan Weil Message-id: 20171016202912.1117-1-sw@weilnetz.de Signed-off-by: Stefan Hajnoczi --- util/oslib-posix.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 80086c549f..382bd4a231 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -59,8 +59,8 @@ struct MemsetThread { char *addr; - uint64_t numpages; - uint64_t hpagesize; + size_t numpages; + size_t hpagesize; QemuThread pgthread; sigjmp_buf env; }; @@ -301,11 +301,7 @@ static void sigbus_handler(int signal) static void *do_touch_pages(void *arg) { MemsetThread *memset_args = (MemsetThread *)arg; - char *addr = memset_args->addr; - uint64_t numpages = memset_args->numpages; - uint64_t hpagesize = memset_args->hpagesize; sigset_t set, oldset; - int i = 0; /* unblock SIGBUS */ sigemptyset(&set); @@ -315,6 +311,10 @@ static void *do_touch_pages(void *arg) if (sigsetjmp(memset_args->env, 1)) { memset_thread_failed = true; } else { + char *addr = memset_args->addr; + size_t numpages = memset_args->numpages; + size_t hpagesize = memset_args->hpagesize; + size_t i; for (i = 0; i < numpages; i++) { /* * Read & write back the same value, so we don't @@ -351,7 +351,8 @@ static inline int get_memset_num_threads(int smp_cpus) static bool touch_all_pages(char *area, size_t hpagesize, size_t numpages, int smp_cpus) { - uint64_t numpages_per_thread, size_per_thread; + size_t numpages_per_thread; + size_t size_per_thread; char *addr = area; int i = 0; -- 2.11.4.GIT