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Roger Pau Monne 96bd96bbbe xen/privcmd: allow fetching resource sizes 
commit ef3a575baf53571dc405ee4028e26f50856898e7 upstream.

Allow issuing an IOCTL_PRIVCMD_MMAP_RESOURCE ioctl with num = 0 and
addr = 0 in order to fetch the size of a specific resource.

Add a shortcut to the default map resource path, since fetching the
size requires no address to be passed in, and thus no VMA to setup.

This is missing from the initial implementation, and causes issues
when mapping resources that don't have fixed or known sizes.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Tested-by: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: stable@vger.kernel.org # >= 4.18
Link: https://lore.kernel.org/r/20210112115358.23346-1-roger.pau@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-04-12 12:51:28 +08:00
Documentation net: change TCP_TIMEWAIT_LEN on runtime 2021-03-16 16:43:58 +08:00
LICENSES Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
arch ARM: picoxcell: fix missing interrupt-parent properties 2021-04-12 12:51:25 +08:00
block bfq: Fix computation of shallow depth 2021-04-12 12:51:24 +08:00
certs Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
crypto crypto: asym_tpm: correct zero out potential secrets 2021-04-12 12:51:10 +08:00
drivers xen/privcmd: allow fetching resource sizes 2021-04-12 12:51:28 +08:00
fs ext4: fix superblock checksum failure when setting password salt 2021-04-12 12:51:27 +08:00
include compiler.h: Raise minimum version of GCC to 5.1 for arm64 2021-04-12 12:51:28 +08:00
init exec: Transform exec_update_mutex into a rw_semaphore 2021-04-12 12:51:05 +08:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2021-03-16 16:27:51 +08:00
kernel tracing/kprobes: Do the notrace functions check without kprobes on ftrace 2021-04-12 12:51:21 +08:00
lib lib/raid6: Let $(UNROLL) rules work with macOS userland 2021-04-12 12:51:24 +08:00
mm mm, slub: consider rest of partial list if acquire_slab() fails 2021-04-12 12:51:27 +08:00
net netfilter: nft_compat: remove flush counter optimization 2021-04-12 12:51:28 +08:00
package generate-rpms: modify the name of the kernel tag for x86 and arm64 2021-04-07 06:53:59 +00:00
samples samples: bpf: Fix lwt_len_hist reusing previous BPF map 2021-03-16 16:42:53 +08:00
scripts depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-04-12 12:51:06 +08:00
security dump_common_audit_data(): fix racy accesses to ->d_name 2021-04-12 12:51:25 +08:00
sound ALSA: firewire-tascam: Fix integer overflow in midi_port_work() 2021-04-12 12:51:28 +08:00
tools perf intel-pt: Fix 'CPU too large' error 2021-04-12 12:51:25 +08:00
usr Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
virt kvm: check tlbs_dirty directly 2021-04-12 12:51:13 +08:00
.clang-format Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.cocciconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.get_maintainer.ignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitattributes Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
COPYING Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
CREDITS Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kbuild Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2021-03-16 16:34:24 +08:00
Makefile kbuild: enforce -Werror=return-type 2021-04-12 12:51:21 +08:00
README Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
README.md Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
backport_remove_lists.txt Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tools_key.pub Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00

README.md

Tencent Linux Kernel 4.0