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Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port up
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing |
Date: |
Tue, 30 Mar 2010 22:54:03 +0300 |
On 3/30/10, Juergen Lock <address@hidden> wrote:
> On Tue, Mar 30, 2010 at 09:04:28PM +0300, Blue Swirl wrote:
> > On 3/25/10, Juergen Lock <address@hidden> 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: <address@hidden>
> [...]
>
> --- 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...
I was thinking something like (abi_ulong)-1 but maybe that isn't any
more correct.
- [Qemu-devel] Re: qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, (continued)
- [Qemu-devel] Re: qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Brandon Gooch, 2010/03/26
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Blue Swirl, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Juergen Lock, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Richard Henderson, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Juergen Lock, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Richard Henderson, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Juergen Lock, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Juergen Lock, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Juergen Lock, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Richard Henderson, 2010/03/30
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing,
Blue Swirl <=
- Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing, Juergen Lock, 2010/03/30