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Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers |
Date: |
Tue, 14 Jun 2011 13:21:40 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2011-06-14 13:11, Alexander Graf wrote:
>
> On 08.06.2011, at 16:10, Jan Kiszka wrote:
>
> This helps reducing our build-time checks for feature support in the
> available Linux kernel headers. And it helps users that do not have
> sufficiently recent headers installed on their build machine.
>
> Consequently, the patch removes and build-time checks for kvm and vhost
> in configure, the --kerneldir switch, and KVM_CFLAGS. Kernel headers are
> supposed to be provided by QEMU only.
>
> s390 needs some extra love as it carries redefinitions from kernel
> headers.
>
> Yes. I was wondering if we should unconditionally include the kernel headers
> there. The problem I'm seeing there is that I don't know if that would work
> fine on non-Linux hosts, as that code definitely gets compiled there, while
> KVM code is not.
>
>
>
> [...]
>
> diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
> index 4e5c391..b5e587f 100644
> --- a/target-s390x/cpu.h
> +++ b/target-s390x/cpu.h
> @@ -313,16 +313,6 @@ CPUState *s390_cpu_addr2state(uint16_t cpu_addr);
> /* from s390-virtio-bus */
> extern const target_phys_addr_t virtio_size;
>
> -#ifndef KVM_S390_SIGP_STOP
> -#define KVM_S390_SIGP_STOP 0
> -#define KVM_S390_PROGRAM_INT 0
> -#define KVM_S390_SIGP_SET_PREFIX 0
> -#define KVM_S390_RESTART 0
> -#define KVM_S390_INT_VIRTIO 0
> -#define KVM_S390_INT_SERVICE 0
> -#define KVM_S390_INT_EMERGENCY 0
> -#endif
> -
> #endif
> void cpu_lock(void);
> void cpu_unlock(void);
> diff --git a/target-s390x/op_helper.c b/target-s390x/op_helper.c
> index db03a79..9429698 100644
> --- a/target-s390x/op_helper.c
> +++ b/target-s390x/op_helper.c
> @@ -23,6 +23,7 @@
> #include "helpers.h"
> #include <string.h>
> #include "kvm.h"
> +#include <linux/kvm.h>
>
> Have you tried to compile this on non-Linux?
Sorry, I don't have "non-Linux" around. :) Do you expect build problems
with that header? Why?
BTW, if you depend on KVM_* constants for non-KVM builds, that looks a
bit fishy to me. Why is that code built at all in that setup?
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
- [Qemu-devel] [PATCH 12/12] Remove unneeded kvm.h from cpu-exec.c, (continued)
[Qemu-devel] [PATCH 10/12] kvm: Clean up stubs, Jan Kiszka, 2011/06/08
[Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers, Jan Kiszka, 2011/06/08
Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers, Stefan Weil, 2011/06/22
- Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers, Jan Kiszka, 2011/06/22
- Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers, Stefan Weil, 2011/06/23
- Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers, Jan Kiszka, 2011/06/23
- [Qemu-devel] [PATCH] Fix fallouts from Linux header inclusion, Jan Kiszka, 2011/06/23
- Re: [Qemu-devel] [PATCH] Fix fallouts from Linux header inclusion, Andreas Färber, 2011/06/23
- Re: [Qemu-devel] [PATCH] Fix fallouts from Linux header inclusion, Stefan Weil, 2011/06/23
- Re: [Qemu-devel] [PATCH] Fix fallouts from Linux header inclusion, Blue Swirl, 2011/06/26