On 06/11/2013 14:49, "David Vrabel" <david.vrabel at citrix.com> wrote: > The series (for Xen 4.4) improves the kexec hypercall by making Xen > responsible for loading and relocating the image. This allows kexec > to be usable by pv-ops kernels and should allow kexec to be usable > from a HVM or PVH privileged domain. Acked-by: Keir Fraser <keir at xen.org> > I have now tested this with a Linux kernel image using the VGA console > which was what was causing problems in v9 (this turned out to be a > kexec-tools bug). > > The required patch series for kexec-tools will be posted shortly and > are available from the xen-v7 branch of: > > http://xenbits.xen.org/gitweb/?p=people/dvrabel/kexec-tools.git;a=summary > > Changes in v10: > > - Document host state on exec. > - Fix kimage_alloc() error path (double free, crash on zero kimage->head). > - Check for segment before expanding it in load_v1. > - Move kexec_lock define into kexec_swap_images(). > > Changes in v9: > > - Update comments to correctly say 4.4. > - Minor updates the kexec_reloc assembly to improve maintainability a > bit. > > Changes in v8: > > - Use #defines for compat ABI structures. > - Tweak link time check for kexec_reloc. > > Changes in v7: > > - No longer use GUEST_HANDLE_64(), get a uniform ABI by using unions > and explicit padding. > - Only map the segments and not all of RAM. > - Add a mechanism to create mappings for use by the exec'd image (a > segment with a NULL buf handle). > - Fix a bug where a crash image's code page would by placed at machine > address 0 (instead of inside the crash region). > > Changes in v6: > > - Fix double free in KEXEC_load_v1 failure path. > - Only copy the relocation code and not the whole page. > - Add myself as the kexec maintainer. > > Changes in v5 (not posted to the list): > > - _rsvd -> _pad in one of the public ABI structures. > - Fix bug where trailing pages were not zeroed. This fixes loading a > 64-bit Linux kernel using a more recent version of kexec-tools. > - Check the relocation code fits into a page at link time. > > Changes in v4: > > - Use paddr_t and page_to_maddr() etc. for portability. > - Add explicit padding to hypercall structures where required. > - Minor cleanup of the kexec_reloc assembly. > - Print a message before exec'ing a crash image. > - Style fixes (tabs, trailing whitespace) and typos. > - Fix a bug where using the V1 interface and unloading a image may crash. > > Changes in v3: > > - Provide old struct xen_kexec_load if __XEN_INTERFACE_VERSION__ < 4.3 > - Adjust new struct xen_kexec_load to avoid unnecessary padding. > - Use domheap pages for the image and control pages. > - Remove the DBG() macros from the reloc code. > > David > > > _______________________________________________ > Xen-devel mailing list > Xen-devel at lists.xen.org > http://lists.xen.org/xen-devel
