On Fri, Apr 21, 2023 at 07:22:45AM +0200, Karim Taha wrote: > From: Warner Losh <i...@bsdimp.com> > > Allow guest_base to be initialized on 64-bit hosts, the initial value is used > by g2h_untagged function defined in include/exec/cpu_ldst.h
This commit message is all incorrectly structured I'm afraid. There needs to a short 1 line summary, then a blank line, then the full commit description text, then a blank line, then the Signed-off-by tag(s). Also if you're sending work done by Warner (as the From tag suggests), then we would expect to see Warner's own Signed-off-by tag, in addition to your own Signed-off-by. > --- > bsd-user/main.c | 16 +++++++++++++++- > 1 file changed, 15 insertions(+), 1 deletion(-) > > diff --git a/bsd-user/main.c b/bsd-user/main.c > index babc3b009b..afdc1b5f3c 100644 > --- a/bsd-user/main.c > +++ b/bsd-user/main.c > @@ -50,8 +50,22 @@ > #include "target_arch_cpu.h" > > int singlestep; > -uintptr_t guest_base; > + > +/* > + * Going hand in hand with the va space needed (see below), we need > + * to find a host address to map the guest to. Assume that qemu > + * itself doesn't need memory above 32GB (or that we don't collide > + * with anything interesting). This is selected rather arbitrarily, > + * but seems to produce good results in tests to date. > + */ > +# if HOST_LONG_BITS >= 64 > +uintptr_t guest_base = 0x800000000ul; /* at 32GB */ > +bool have_guest_base = true; > +#else > +uintptr_t guest_base; /* TODO: use sysctl to find big enough hole */ > bool have_guest_base; > +#endif > + > /* > * When running 32-on-64 we should make sure we can fit all of the possible > * guest address space into a contiguous chunk of virtual host memory. > -- > 2.40.0 > > With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
