Jan Beulich b7007bc6f9 x86/HVM: avoid pointer wraparound in bufioreq handling ...

The number of slots per page being 511 (i.e. not a power of two) means
that the (32-bit) read and write indexes going beyond 2^32 will likely
disturb operation. Extend I/O req server creation so the caller can
indicate that it is using suitable atomic accesses where needed (not
all accesses to the two pointers really need to be atomic), allowing
the hypervisor to atomically canonicalize both pointers when both have
gone through at least one cycle.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

2015-06-18 16:44:15 +02:00

..

include

x86/HVM: avoid pointer wraparound in bufioreq handling

2015-06-18 16:44:15 +02:00

COPYING

# HG changeset patch

2010-08-24 18:42:59 +01:00

Makefile

tools: replace private LIBDIR with automake libdir

2015-05-21 15:12:11 +01:00

xc_arinc653.c

arinc: Add poolid parameter to scheduler get/set functions

2013-12-04 14:02:10 +00:00

xc_bitops.h

libxc/save: reuse send_dirty_pages() in send_all_pages()

2015-05-14 13:03:57 +01:00

xc_compression.c

tools/libxc: remove double inclusion of errno.h

2014-03-10 16:50:17 +00:00

xc_core_arm.c

libxc: Introduce xc_domain_nr_gpfns as a cousin of xc_domain_maximum_gpfn.

2015-03-30 16:07:30 +01:00

xc_core_arm.h

Fix emacs local variable block to use correct C style variable.

2013-02-21 16:12:46 +00:00

xc_core_x86.c

libxc: Introduce xc_domain_nr_gpfns as a cousin of xc_domain_maximum_gpfn.

2015-03-30 16:07:30 +01:00

xc_core_x86.h

Fix emacs local variable block to use correct C style variable.

2013-02-21 16:12:46 +00:00

xc_core.c

tools/libxc: Annotate xc_report_error with __attribute__((format))

2014-06-10 13:46:45 +01:00

xc_core.h

libxc: introduce a per architecture scratch pfn for temporary grant mapping

2015-01-27 16:30:35 +00:00

xc_cpu_hotplug.c

# HG changeset patch

2010-08-24 18:42:59 +01:00

xc_cpufeature.h

x86/tools: expose SMAP to HVM guests

2014-05-12 17:05:33 +02:00

xc_cpuid_x86.c

libxc: Expose the 1GB pages cpuid flag to guest

2015-01-08 13:50:06 +00:00

xc_cpupool.c

libxc: Replaces tabs with spaces in xc_cpupool_freeinfo

2015-03-20 16:04:35 +00:00

xc_csched2.c

# HG changeset patch

2010-08-24 18:42:59 +01:00

xc_csched.c

libxc: Implement SCHEDOP sysctl for credit scheduler

2012-02-23 10:17:50 +00:00

xc_dom_arm.c

tools/libxc: Allocate magic page for mem access on ARM

2015-04-22 14:08:29 +01:00

xc_dom_armzimageloader.c

tools: arm: remove code to check for a DTB appended to the kernel

2014-05-14 15:12:01 +01:00

xc_dom_binloader.c

Revert "tools: libxc: flush data cache after loading images into guest memory"

2014-01-10 16:59:01 +00:00

xc_dom_boot.c

x86/domctl: improve XEN_DOMCTL_hypercall_init error handling

2015-03-13 16:31:27 +01:00

xc_dom_bzimageloader.c

libxc: use xc_dom_panic when decompressor is not supported

2015-03-11 11:36:38 +00:00

xc_dom_compat_linux.c

Fix emacs local variable block to use correct C style variable.

2013-02-21 16:12:46 +00:00

xc_dom_core.c

libxc: add p2m_size to xc_dom_image

2015-03-18 12:04:54 +00:00

xc_dom_decompress_lz4.c

libxc: don't leak buffer containing the uncompressed PV kernel

2014-11-25 15:53:53 +00:00

xc_dom_decompress_unsafe_bzip2.c

libxc: Add unsafe decompressors

2013-04-22 12:46:30 +01:00

xc_dom_decompress_unsafe_lzma.c

libxc: Add unsafe decompressors

2013-04-22 12:46:30 +01:00

xc_dom_decompress_unsafe_lzo1x.c

libxc: Fix stub domain build breakage

2014-07-04 09:47:01 +01:00

xc_dom_decompress_unsafe_xz.c

tools/libxc: Shuffle definitions and uses of min()/max() macros

2014-07-18 13:38:08 +01:00

xc_dom_decompress_unsafe.c

libxc: Add unsafe decompressors

2013-04-22 12:46:30 +01:00

xc_dom_decompress_unsafe.h

libxc: Add unsafe decompressors

2013-04-22 12:46:30 +01:00

xc_dom_decompress.h

libxc: add LZ4 decompression support

2013-10-07 09:42:51 +02:00

xc_dom_elfloader.c

libxc: fix xc_dom_load_elf_symtab

2015-06-17 11:57:39 +01:00

xc_dom_x86.c

tools/libxc: Batch memory allocations for PV guests

2015-06-17 11:39:56 +01:00

xc_domain_restore.c

tools/libxc: Migration v2 framework

2015-05-05 14:30:44 +01:00

xc_domain_save.c

tools/libxc: Migration v2 framework

2015-05-05 14:30:44 +01:00

xc_domain.c

x86/HVM: avoid pointer wraparound in bufioreq handling

2015-06-18 16:44:15 +02:00

xc_efi.h

# HG changeset patch

2010-08-24 18:42:59 +01:00

xc_elf.h

# HG changeset patch

2010-08-24 18:42:59 +01:00

xc_evtchn.c

Fix emacs local variable block to use correct C style variable.

2013-02-21 16:12:46 +00:00

xc_flask.c

libxc: add missing xc_hypercall_bounce_pre calls

2015-06-03 11:12:01 +01:00

xc_foreign_memory.c

tools/libxc: assign positive values to errno

2014-03-10 16:50:58 +00:00

xc_freebsd_osdep.c

libxc: Propagate errno from hypercall instead of anything else.

2015-03-20 16:04:35 +00:00

xc_freebsd.c

libxc: add support for FreeBSD

2014-06-18 17:17:49 +01:00

xc_gnttab.c

tools/libxc: Annotate xc_report_error with __attribute__((format))

2014-06-10 13:46:45 +01:00

xc_hcall_buf.c

libxc: Propagate errno from hypercall instead of anything else.

2015-03-20 16:04:35 +00:00

xc_hvm_build_arm.c

Fix emacs local variable block to use correct C style variable.

2013-02-21 16:12:46 +00:00

xc_hvm_build_x86.c

libxc: unify handling of vNUMA layout

2015-06-17 11:29:56 +01:00

xc_kexec.c

libxc: add API for kexec hypercall

2013-11-12 11:47:07 +01:00

xc_linux_osdep.c

libxc: Propagate errno from hypercall instead of anything else.

2015-03-20 16:04:35 +00:00

xc_linux.c

Fix emacs local variable block to use correct C style variable.

2013-02-21 16:12:46 +00:00

xc_mem_access.c

xen/vm_event: Add RESUME option to vm_event_op domctl

2015-04-16 09:43:11 +01:00

xc_mem_paging.c

xen/vm_event: Add RESUME option to vm_event_op domctl

2015-04-16 09:43:11 +01:00

xc_memshr.c

xen/vm_event: Add RESUME option to vm_event_op domctl

2015-04-16 09:43:11 +01:00

xc_minios.c

tools/libxc: Introduce ARRAY_SIZE() and replace handrolled examples

2014-06-10 16:04:03 +01:00

xc_misc.c

libxl: Add interface for querying hypervisor about PCI topology

2015-05-13 15:03:38 +01:00

xc_monitor.c

vm_event: clean up control-register-write vm_events and add XCR0 event

2015-06-05 12:20:18 +02:00

xc_msr_x86.h

tools, docs: add total/local memory bandwith monitoring

2015-03-05 16:27:49 +00:00

xc_netbsd.c

Revert "tools: libxc: flush data cache after loading images into guest memory"

2014-01-10 16:59:01 +00:00

xc_nomigrate.c

libxc, libxl, hvmloader: strip out outdated VM generation ID implementation

2014-06-27 14:13:22 +01:00

xc_offline_page.c

libxc: Check xc_maximum_ram_page for negative return values.

2015-03-20 16:07:35 +00:00

xc_pagetab.c

libxc: introduce xc_domain_get_guest_width()

2013-09-13 13:06:28 +01:00

xc_physdev.c

libxc: xc_physdev_map return -1 and populate errno.

2015-03-20 16:04:35 +00:00

xc_pm.c

libxc: Fix xc_pm API calls to return negative error and stash error in errno.

2015-03-20 16:04:35 +00:00

xc_private.c

libxc/progress: Extend the progress interface

2015-05-05 14:29:45 +01:00

xc_private.h

libxc/progress: Extend the progress interface

2015-05-05 14:29:45 +01:00

xc_psr.c

tools, docs: add total/local memory bandwith monitoring

2015-03-05 16:27:49 +00:00

xc_resource.c

libxc: provide interface for generic resource access

2014-10-06 12:35:55 +02:00

xc_resume.c

tools/libxc: Improve the *_FIELD() macros

2014-06-27 14:13:22 +01:00

xc_rt.c

libxc: add rtds scheduler

2014-09-23 14:40:07 +01:00

xc_sedf.c

# HG changeset patch

2010-08-24 18:42:59 +01:00

xc_solaris.c

Revert "tools: libxc: flush data cache after loading images into guest memory"

2014-01-10 16:59:01 +00:00

xc_sr_common_x86_pv.c

tools/libxc: x86 PV common code

2015-05-05 14:30:46 +01:00

xc_sr_common_x86_pv.h

tools/libxc: x86 PV common code

2015-05-05 14:30:46 +01:00

xc_sr_common_x86.c

tools/libxc: x86 common code

2015-05-05 14:30:46 +01:00

xc_sr_common_x86.h

tools/libxc: x86 common code

2015-05-05 14:30:46 +01:00

xc_sr_common.c

libxc/migration: Specification update for CHECKPOINT records

2015-05-14 13:01:11 +01:00

xc_sr_common.h

libxc/restore: implement Remus checkpointed restore

2015-05-29 12:25:01 +01:00

xc_sr_restore_x86_hvm.c

libxc/restore: split read/handle qemu info

2015-05-14 13:04:15 +01:00

xc_sr_restore_x86_pv.c

tools/libxc: x86 PV restore code

2015-05-05 14:30:47 +01:00

xc_sr_restore.c

libxc/restore: implement Remus checkpointed restore

2015-05-29 12:25:01 +01:00

xc_sr_save_x86_hvm.c

libxc/save: Adjust stream-position callbacks for checkpointed streams

2015-05-14 13:00:57 +01:00

xc_sr_save_x86_pv.c

libxc/save: Adjust stream-position callbacks for checkpointed streams

2015-05-14 13:00:57 +01:00

xc_sr_save.c

libxc/save: implement Remus checkpointed save

2015-05-29 12:25:00 +01:00

xc_sr_stream_format.h

libxc/migration: Specification update for CHECKPOINT records

2015-05-14 13:01:11 +01:00

xc_suspend.c

tools/libxc: use XEN_RUN_DIR for SUSPEND_LOCK_FILE

2014-09-23 10:15:43 +01:00

xc_tbuf.c

libxc/xentrace: Use xc_cpumap_t for xc_tbuf_set_cpu_mask

2015-05-08 14:54:53 +01:00

xc_tmem.c

libxc: Fix xc_tmem_control to return proper error.

2015-03-20 16:06:42 +00:00

xc_vm_event.c

xen/vm_event: Add RESUME option to vm_event_op domctl

2015-04-16 09:43:11 +01:00

xenctrl_osdep_ENOSYS.c

libxc: fix printf formatting error surfaced by 66f8c6

2014-06-27 14:13:23 +01:00

xg_private.c

libxc: remove include of malloc.h

2014-05-02 13:34:34 +01:00

xg_private.h

tools/libxc: Shuffle definitions and uses of min()/max() macros

2014-07-18 13:38:08 +01:00

xg_save_restore.h

xen/mem_event: Cleanup mem_event names in rings, functions and domctls

2015-04-09 11:40:17 +01:00

xtl_core.c

libxc/progress: Extend the progress interface

2015-05-05 14:29:45 +01:00

xtl_logger_stdio.c

libxc: remove usage of "daylight" variable

2014-05-02 13:34:34 +01:00