Re: [Qemu-devel] [PATCH v2 1/3] compiler: define QEMU_CACHELINE_SIZE

[Geert Martin Ijewski <gm.ijewski@web.de>]

Am 06.06.2017 um 23:38 schrieb Emilio G. Cota:
 > On Tue, Jun 06, 2017 at 22:28:23 +0200, Geert Martin Ijewski wrote:
 >> On a fully patched Windows 10 with an i5-4690 this code works for me 
(TM):
 >
 > Thanks!
 > Can you please test this?
 >
 > 		Emilio
 > ---
 > #include "qemu/osdep.h"
 > #include <windows.h>

unnecassary as it's already included by qemu/osdep.h -> sysemu/os-win32.h
 >
 > static unsigned int linesize_win(PROCESSOR_CACHE_TYPE type)
 > {
 >      PSYSTEM_LOGICAL_PROCESSOR_INFORMATION buf;
 >      DWORD size = 0;
 >      unsigned int ret = 0;
 >      BOOL success;
 >      size_t n;
 >      size_t i;
 >
 >      success = GetLogicalProcessorInformation(0, &size);
 >      if (success || GetLastError() != ERROR_INSUFFICIENT_BUF) {
 >          return 0;
 >      }
 >      buf = (PSYSTEM_LOGICAL_PROCESSOR_INFORMATION)g_malloc0(size);
 >      if (!GetLogicalProcessorInformation(buf, &size)) {
 >          goto out;
 >      }
 >
 >      n = size / sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
 >      for (i = 0; i < n; i++) {
 >          if (buf[i].Relationship == RelationCache &&
 >              buf[i].Cache.Level == 1 &&
 >              (buf[i].Cache.Type == CacheUnified ||
 >               buf[i].Cache.Type == type)) {
 >              ret = buf[i].Cache.LineSize;
 >              break;
 >          }
 >      }
 >   out:
 >      g_free(buf);
 >      return ret;
 > }
 >
 > linesize_win(CacheInstruction);
 > linesize_win(CacheData);
 >
 >

Yes, that works.
Tested-by: Geert Martin Ijewski <gm.ijewski@web.de>