Date: Fri, 5 Jun 2015 11:51:50 -0700 From: Neel Natu <neelnatu@gmail.com> To: Stefan Andritoiu <stefan.andritoiu@gmail.com> Cc: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: Setting custom field in struct thread from bhyverun code Message-ID: <CAFgRE9EAmL5FYcge6UhaYjFxLY8RoM5eyci-pmLDAOGwQdTV9Q@mail.gmail.com> In-Reply-To: <CAO3d8=bpczvx26xSiteb7xPCTjt04ogBYObGCMsewNUi=U5z8w@mail.gmail.com> References: <CAO3d8=bpczvx26xSiteb7xPCTjt04ogBYObGCMsewNUi=U5z8w@mail.gmail.com>
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Hi Stefan, On Fri, Jun 5, 2015 at 10:23 AM, Stefan Andritoiu <stefan.andritoiu@gmail.com> wrote: > I've added a new field to struct thread and want to set it's value > when the VCPU thread is created. I need this new field in the ULE > scheduler. > My plan was this: in the fbsdrun_start_thread() function make a > custom-ioctl call {ioctl(ctx->fd, VM_SET_CUSTOM, ..)} to set it. But I > have no idea how to get the thread I need, to set it's value. > How can I get the thread? Or is there a better way of setting, a > VCPU-thread's field, at the moment the thread is created, to use it in > the scheduler? The thread context in which the ioctl is executed is passed as the last argument to the ioctl handler. For example: vmmdev_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag, struct thread *td) So, if you issue the ioctl() in vcpu context then 'td' points to the vcpu thread. best Neel > _______________________________________________ > freebsd-virtualization@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization > To unsubscribe, send any mail to "freebsd-virtualization-unsubscribe@freebsd.org"
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