linux-kernel - Re: [PATCH] tools/virtio: Test virtual address range detection

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Date:   Tue, 22 Feb 2022 07:58:33 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     Stefano Garzarella <sgarzare@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        virtualization <virtualization@...ts.linux-foundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tools/virtio: Test virtual address range detection

On Tue, 2022-02-22 at 01:31 -0500, Michael S. Tsirkin wrote:
> On Mon, Feb 21, 2022 at 05:18:48PM +0000, David Woodhouse wrote:
> > 
> > [dwoodhou@i7 virtio]$ sudo ~/virtio_test
> > Detected virtual address range 0x1000-0x7ffffffff000
> > spurious wakeups: 0x0 started=0x100000 completed=0x100000
> > 
> > Although in some circumstances I also see a different build failure:
> > 
> > cc -g -O2 -Werror -Wno-maybe-uninitialized -Wall -I. -I../include/ -I ../../usr/include/ -Wno-pointer-sign -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE -include ../../include/linux/kconfig.h   -c -o vringh_test.o vringh_test.c
> > In file included from ./linux/uio.h:3,
> >                  from ./linux/../../../include/linux/vringh.h:15,
> >                  from ./linux/vringh.h:1,
> >                  from vringh_test.c:9:
> > ./linux/../../../include/linux/uio.h:10:10: fatal error: linux/mm_types.h: No such file or directory
> >    10 | #include <linux/mm_types.h>
> >       |          ^~~~~~~~~~~~~~~~~~
> > compilation terminated.
> > make: *** [<builtin>: vringh_test.o] Error 1
> 
> Which tree has this build failure? In mine linux/uio.h does not
> include linux/mm_types.h.

Strictly it's
https://git.infradead.org/users/dwmw2/linux.git/shortlog/refs/heads/xen-evtchn-kernel
but I'm sure my part isn't relevant; it's just v5.17-rc5.

 $ git blame include/linux/uio.h | grep mm_types.h
d9c19d32d86fa (Matthew Wilcox (Oracle) 2021-10-18 10:39:06 -0400  10) #include <linux/mm_types.h>
 $ git describe --tags d9c19d32d86fa
v5.16-rc4-37-gd9c19d32d86f

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