Re: [Xen-devel] how to disable build of pv-shim?

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Tue, May 14, 2019 at 03:26:53AM -0600, Jan Beulich wrote:
> >>> On 14.05.19 at 10:55, <roger.pau@xxxxxxxxxx> wrote:
> > On Mon, May 13, 2019 at 04:28:12PM +0100, Wei Liu wrote:
> >> On Mon, May 13, 2019 at 05:20:05PM +0200, Roger Pau Monné wrote:
> >> > On Mon, May 13, 2019 at 04:53:21PM +0200, Olaf Hering wrote:
> >> > > What is the recommended way to disable CONFIG_PV_SHIM, which is set in
> >> > > tools/firmware/Makefile? From my understanding there is no way to 
> > influence
> >> > > its value from outside, which means the build always enters xen-dir/.
> >> > 
> >> > I think the following should do the trick.
> >> > 
> >> > Let me know if that works for you and I will submit it formally.
> >> > 
> >> > Thanks!
> >> > 
> >> > ---8<---
> >> > diff --git a/config/Tools.mk.in b/config/Tools.mk.in
> >> > index 98245f63c9..84ddb1a542 100644
> >> > --- a/config/Tools.mk.in
> >> > +++ b/config/Tools.mk.in
> >> > @@ -75,3 +75,5 @@ TINFO_LIBS          := @TINFO_LIBS@
> >> >  ARGP_LDFLAGS        := @argp_ldflags@
> >> >  
> >> >  FILE_OFFSET_BITS    := @FILE_OFFSET_BITS@
> >> > +
> >> > +CONFIG_PV_SHIM      := @pvshim@
> >> > diff --git a/tools/configure.ac b/tools/configure.ac
> >> > index c9fd69ddfa..8df2fd604b 100644
> >> > --- a/tools/configure.ac
> >> > +++ b/tools/configure.ac
> >> > @@ -492,4 +492,15 @@ AC_ARG_ENABLE([9pfs],
> >> >  
> >> >  AC_SUBST(ninepfs)
> >> >  
> >> > +AC_ARG_ENABLE([pvshim],
> >> > +    AS_HELP_STRING([--disable-pvshim], [Disable pvshim build (x86 only, 
> > enabled by default)]),
> >> > +    [AS_IF([test "x$enable_pvshim" = "xno"], [pvshim=n], [pvshim=y])], [
> >> > +    case "$host_cpu" in
> >> > +        i[[3456]]86|x86_64)
> >> > +           pvshim="y";;
> >> 
> >> Since xen doesn't build on 32bit anymore you may want to exclude
> >> i[3456]86 here?
> > 
> > Oh, I didn't realize this. Is it true for all distros?
> 
> It's a property of the hypervisor (note: not the tool stack), as of 4.3.

But the property is that the hypervisor requires an amd64 compatible
CPU to run, but it should build fine on 32bit.

Thanks, Roger.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel