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From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org,
	xen-devel@lists.xensource.com, konrad.wilk@oracle.com,
	david.vrabel@citrix.com, boris.ostrovsky@oracle.com,
	tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
	mmarek@suse.cz, linux-kbuild@vger.kernel.org
Subject: Re: [RESEND Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols
Date: Wed, 28 Jan 2015 06:11:51 +0100	[thread overview]
Message-ID: <54C86F97.1000907@suse.com> (raw)
In-Reply-To: <1421826565-10826-2-git-send-email-jgross@suse.com>

*Ping*

David wants a comment from the x86 maintainers.


Juergen

On 01/21/2015 08:49 AM, Juergen Gross wrote:
> Today there are several places in the kernel which build tables
> containing one entry for each possible Xen hypercall. Create an
> infrastructure to be able to generate these tables at build time.
>
> Based-on-patch-by: Jan Beulich <jbeulich@suse.com>
> Signed-off-by: Juergen Gross <jgross@suse.com>
> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
> ---
>   arch/x86/syscalls/Makefile |  9 +++++++++
>   scripts/xen-hypercalls.sh  | 12 ++++++++++++
>   2 files changed, 21 insertions(+)
>   create mode 100644 scripts/xen-hypercalls.sh
>
> diff --git a/arch/x86/syscalls/Makefile b/arch/x86/syscalls/Makefile
> index 3323c27..a55abb9 100644
> --- a/arch/x86/syscalls/Makefile
> +++ b/arch/x86/syscalls/Makefile
> @@ -19,6 +19,9 @@ quiet_cmd_syshdr = SYSHDR  $@
>   quiet_cmd_systbl = SYSTBL  $@
>         cmd_systbl = $(CONFIG_SHELL) '$(systbl)' $< $@
>
> +quiet_cmd_hypercalls = HYPERCALLS $@
> +      cmd_hypercalls = $(CONFIG_SHELL) '$<' $@ $(filter-out $<,$^)
> +
>   syshdr_abi_unistd_32 := i386
>   $(uapi)/unistd_32.h: $(syscall32) $(syshdr)
>   	$(call if_changed,syshdr)
> @@ -47,10 +50,16 @@ $(out)/syscalls_32.h: $(syscall32) $(systbl)
>   $(out)/syscalls_64.h: $(syscall64) $(systbl)
>   	$(call if_changed,systbl)
>
> +$(out)/xen-hypercalls.h: $(srctree)/scripts/xen-hypercalls.sh
> +	$(call if_changed,hypercalls)
> +
> +$(out)/xen-hypercalls.h: $(srctree)/include/xen/interface/xen*.h
> +
>   uapisyshdr-y			+= unistd_32.h unistd_64.h unistd_x32.h
>   syshdr-y			+= syscalls_32.h
>   syshdr-$(CONFIG_X86_64)		+= unistd_32_ia32.h unistd_64_x32.h
>   syshdr-$(CONFIG_X86_64)		+= syscalls_64.h
> +syshdr-$(CONFIG_XEN)		+= xen-hypercalls.h
>
>   targets	+= $(uapisyshdr-y) $(syshdr-y)
>
> diff --git a/scripts/xen-hypercalls.sh b/scripts/xen-hypercalls.sh
> new file mode 100644
> index 0000000..676d922
> --- /dev/null
> +++ b/scripts/xen-hypercalls.sh
> @@ -0,0 +1,12 @@
> +#!/bin/sh
> +out="$1"
> +shift
> +in="$@"
> +
> +for i in $in; do
> +	eval $CPP $LINUXINCLUDE -dD -imacros "$i" -x c /dev/null
> +done | \
> +awk '$1 == "#define" && $2 ~ /__HYPERVISOR_[a-z][a-z_0-9]*/ { v[$3] = $2 }
> +	END {   print "/* auto-generated by scripts/xen-hypercall.sh */"
> +		for (i in v) if (!(v[i] in v))
> +			print "HYPERCALL("substr(v[i], 14)")"}' | sort -u >$out
>


  reply	other threads:[~2015-01-28  5:11 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-21  7:49 [RESEND Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
2015-01-21  7:49 ` [RESEND Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols Juergen Gross
2015-01-28  5:11   ` Juergen Gross [this message]
2015-02-06 15:00     ` Juergen Gross
2015-02-19  0:00     ` Ingo Molnar
2015-02-13  5:33   ` Juergen Gross
2015-02-18 23:59   ` Ingo Molnar
2015-01-21  7:49 ` [RESEND Patch V2 2/4] xen: synchronize include/xen/interface/xen.h with xen Juergen Gross
2015-01-21  7:49 ` [RESEND Patch V2 3/4] xen: use generated hypervisor symbols in arch/x86/xen/trace.c Juergen Gross
2015-01-21  7:49 ` [RESEND Patch V2 4/4] xen: use generated hypercall symbols in arch/x86/xen/xen-head.S Juergen Gross
2015-03-02 11:00 ` [Xen-devel] [RESEND Patch V2 0/4] xen: auto-generate symbols for xen hypercalls David Vrabel

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