[newlib-cygwin] Cygwin: cpuinfo: report L3 cache on Intel CPUs

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=402d68af1a0926bd711a36ceaf3fc07407a2983a

commit 402d68af1a0926bd711a36ceaf3fc07407a2983a
Author: Corinna Vinschen <cori...@vinschen.de>
Date:   Wed Apr 11 10:06:25 2018 +0200

    Cygwin: cpuinfo: report L3 cache on Intel CPUs
    
    Signed-off-by: Corinna Vinschen <cori...@vinschen.de>

Diff:
---
 winsup/cygwin/fhandler_proc.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index 942cc96..b118a14 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -768,8 +768,9 @@ format_proc_cpuinfo (void *, char *&destbuf)
          extern long get_cpu_cache_intel (int sysc, uint32_t maxf);
          long cs;
 
-         /* As on Linux, don't check for L3 cache. */
-         cs = get_cpu_cache_intel (_SC_LEVEL2_CACHE_SIZE, maxf);
+         cs = get_cpu_cache_intel (_SC_LEVEL3_CACHE_SIZE, maxf);
+         if (cs == -1)
+           cs = get_cpu_cache_intel (_SC_LEVEL2_CACHE_SIZE, maxf);
          if (cs == -1)
            {
              cs = get_cpu_cache_intel (_SC_LEVEL1_ICACHE_SIZE, maxf);