Date: Sat, 27 Sep 2008 00:04:45 +0200 From: Juergen Lock <nox@jelal.kn-bremen.de> To: Anthony Liguori <anthony@codemonkey.ws> Cc: freebsd-emulation@freebsd.org, qemu-devel@nongnu.org Subject: Re: [Qemu-devel] Re: qemu svn r5281 on FreeBSD - slow usb, vmwarevga, screen updates... (now updated to r5313) Message-ID: <20080926220445.GA13099@saturn.kn-bremen.de> In-Reply-To: <48DCF9FC.2070708@codemonkey.ws> References: <20080921204025.GA81055@saturn.kn-bremen.de> <cd6b4a5b0809230639x27e94477k315796c2cfb650f2@mail.gmail.com> <200809242210.m8OMAcSZ021572@saturn.kn-bremen.de> <cd6b4a5b0809241954p159dd86u17fdc2a485008e7d@mail.gmail.com> <48DCF9FC.2070708@codemonkey.ws>
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On Fri, Sep 26, 2008 at 10:04:28AM -0500, Anthony Liguori wrote: > Matt wrote: >>> Here is another experimental update that forces -lthr on 6.x, and >>> also updates to qemu svn r5313: >>> http://people.freebsd.org/~nox/qemu/qemu-devel-20080924.patch >>> >> >> I just built this update and it seems to have fixed the issue. Host >> CPU usage again tracks with guest CPU usage and all seems well. I'll >> continue to use this build to see if anything else crops up. >> >> Please let me know if there is anything other information I can provide. >> > > If ya'll have patches to make QEMU work on FreeBSD, please submit them. > I'm about to commit a patch that's what it took for me to get SVN working > on FreeBSD. > > The one thing that really tripped me up with the whole aio kld-module > thing. Perhaps we should detect the presence of the module at run time and > disable aio? I assume kldload can only be run as root? Yes. Atm the ports print a warning when aio is not loaded: Index: qemu/vl.c @@ -8409,6 +8409,11 @@ tb_size = 0; +#ifdef __FreeBSD__ + if (modfind("aio") == -1) + fprintf(stderr, "warning: aio not (kld)loaded, may cause `Invalid system call' traps on disk IO\n"); +#endif + optind = 1; for(;;) { if (optind >= argc) And here is another patch thats needed on amd64 hosts for tcg (which I had posted before:) Index: qemu/exec.c @@ -405,6 +405,28 @@ exit(1); } } +#elif defined(__FreeBSD__) + { + int flags; + void *addr = NULL; + flags = MAP_PRIVATE | MAP_ANONYMOUS; +#if defined(__x86_64__) + /* FreeBSD doesn't have MAP_32BIT, use MAP_FIXED and assume + * 0x40000000 is free */ + flags |= MAP_FIXED; + addr = (void *)0x40000000; + /* Cannot map more than that */ + if (code_gen_buffer_size > (800 * 1024 * 1024)) + code_gen_buffer_size = (800 * 1024 * 1024); +#endif + code_gen_buffer = mmap(addr, code_gen_buffer_size, + PROT_WRITE | PROT_READ | PROT_EXEC, + flags, -1, 0); + if (code_gen_buffer == MAP_FAILED) { + fprintf(stderr, "Could not allocate dynamic translator buffer\n"); + exit(1); + } + } #else code_gen_buffer = qemu_malloc(code_gen_buffer_size); if (!code_gen_buffer) { Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de> I'll see if I can prepare another update over the weekend and then go thru more of the patches that have accumulated in the port... Thanx, Juergen
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