Date: Tue, 30 Mar 2010 21:16:29 +0200 From: Juergen Lock <nox@jelal.kn-bremen.de> To: Blue Swirl <blauwirbel@gmail.com> Cc: qemu-devel@nongnu.org, freebsd-emulation@freebsd.org, Toni <tonygio04@gmail.com>, Juergen Lock <nox@jelal.kn-bremen.de>, Andreas Tobler <andreast@fgznet.ch> Subject: Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing Message-ID: <20100330191629.GA95521@triton8.kn-bremen.de> In-Reply-To: <f43fc5581003301104x77c0e527m871b035a7364bd5b@mail.gmail.com> References: <20100325204423.GA46954@triton8.kn-bremen.de> <f43fc5581003301104x77c0e527m871b035a7364bd5b@mail.gmail.com>
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On Tue, Mar 30, 2010 at 09:04:28PM +0300, Blue Swirl wrote: > On 3/25/10, Juergen Lock <nox@jelal.kn-bremen.de> wrote: > > Hi! > > > > Now that qemu git head works again (thanx Aurelien! :) I've finished > > the FreeBSD qemu-devel port update patch/shar that made me uncover > > the bug: > > http://people.freebsd.org/~nox/qemu/qemu-devel-20100323.patch > > resp. > > http://people.freebsd.org/~nox/qemu/qemu-devel-20100323.shar > > > > This also adds a few misc fixes (that I'll submit on the qemu list > > seperately), I have... > > > > . Fixed the FreeBSD executable path detection to work without /proc > > mounted (it usually isn't on FreeBSD), so you now no longer have to > > pass the path to the pc-bios dir with -L if you run qemu out of the > > build dir when another version is installed, like, > > work/qemu-snapshot-20100323_20/i386-softmmu/qemu ... > > > > (files/patch-vl.c in the shar/patch) > > > > . Fixed some more bsd-user bugs so all of i386-bsd-user, x86_64-bsd-user, > > and sparc64-bsd-user now run for me again on FreeBSD stable/8 amd64. > > (I didn't test sparc-bsd-user as I only tried -bsd freebsd and FreeBSD > > doesn't run on 32bit sparc.) - Yes bsd-user still needs more work but > > at least simple exectuables run. > > > > (files/patch-bsd-user-mmap.c, files/patch-exec.c) > > > > . Fixed the bsd-user host page protection code for FreeBSD hosts > > (using kinfo_getvmmap(3) on FeeBSD >= 7.x and /compat/linux/proc > > on older FreeBSD.) > > > > (files/patch-bsd-user-linproc) > > > > . Fixed some compilation warnings and a missing #include. > > > > (files/patch-qemu-char.c, files/patch-qemu-timer.c) > > > > Thanks, applied all except exec.c one. Oh, is there something wrong with it? You mean this one, right? Subject: [PATCH] Avoid page_set_flags() assert in qemu-user host page protection code Message-ID: <20100325211421.GA52572@triton8.kn-bremen.de> [...] --- a/exec.c +++ b/exec.c @@ -293,10 +293,13 @@ static void page_init(void) if (h2g_valid(endaddr)) { endaddr = h2g(endaddr); + page_set_flags(startaddr, endaddr, PAGE_RESERVED); } else { +#if TARGET_ABI_BITS <= L1_MAP_ADDR_SPACE_BITS endaddr = ~0ul; + page_set_flags(startaddr, endaddr, PAGE_RESERVED); +#endif } - page_set_flags(startaddr, endaddr, PAGE_RESERVED); } } while (!feof(f)); I first tried to replace the endaddr in the !h2g_valid(endaddr) case with ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS) - 1 if TARGET_ABI_BITS > L1_MAP_ADDR_SPACE_BITS (which comes from the condition of the assert in page_set_flags() that was triggered on the ~0ul value), but that caused the qemu process to grow into swap and made the box usuable when that code was reached and I had to kill qemu. (The box has 8 GB RAM.) And so I thought just leaving that page range unprotected if only the start address is valid was the lesser evil... ..and thanx for committing the other ones, :) Juergen
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