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Re: [Qemu-devel] [5979] Fix compiling without MREMAP_FIXED


From: Blue Swirl
Subject: Re: [Qemu-devel] [5979] Fix compiling without MREMAP_FIXED
Date: Fri, 12 Dec 2008 18:27:23 +0200

On 12/11/08, Kirill A. Shutemov <address@hidden> wrote:
> On Thu, Dec 11, 2008 at 07:12:26PM +0000, Blue Swirl wrote:
>  > Revision: 5979
>  >           http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5979
>  > Author:   blueswir1
>  > Date:     2008-12-11 19:12:25 +0000 (Thu, 11 Dec 2008)
>  >
>  > Log Message:
>  > -----------
>  > Fix compiling without MREMAP_FIXED
>  >
>  > Modified Paths:
>  > --------------
>  >     trunk/linux-user/mmap.c
>  >
>  > Modified: trunk/linux-user/mmap.c
>  > ===================================================================
>  > --- trunk/linux-user/mmap.c   2008-12-11 17:30:50 UTC (rev 5978)
>  > +++ trunk/linux-user/mmap.c   2008-12-11 19:12:25 UTC (rev 5979)
>  > @@ -546,6 +546,7 @@
>  >
>  >      mmap_lock();
>  >
>  > +#if defined(MREMAP_FIXED)
>  >      if (flags & MREMAP_FIXED)
>  >          host_addr = mremap(g2h(old_addr), old_size, new_size,
>  >                             flags, new_addr);
>  > @@ -560,7 +561,9 @@
>  >          } else
>  >              host_addr = mremap(g2h(old_addr), old_size, new_size,
>  >                                 flags | MREMAP_FIXED, g2h(mmap_start));
>  > -    } else {
>  > +    } else
>  > +#endif
>  > +    {
>  >          host_addr = mremap(g2h(old_addr), old_size, new_size, flags);
>  >          /* Check if address fits target address space */
>  >          if ((unsigned long)host_addr + new_size > (abi_ulong)-1) {
>
>
> I've posted patch that fix building for glibc < 2.4. Please apply my
>  patch instead of it.

Your fix depends on linux headers, is that safe?




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