xen: update to 4.18-tip

Bumping xen to version RELEASE-4.18.2-19-g01f7a3c792, which comprises the following commits:

    01f7a3c792 update Xen version to 4.18.3-pre
    7cdb1fa2ab x86/mtrr: avoid system wide rendezvous when setting AP MTRRs
    f3d20dd317 tools/xentop: Fix cpu% sort order
    dfabab2cd9 x86: respect mapcache_domain_init() failing
    3999b675ca xen/sched: set all sched_resource data inside locked region for new cpu
    8271f0e8f2 libxl: Fix handling XenStore errors in device creation
    9966e54131 libxl: fix population of the online vCPU bitmap for PVH
    a42c83b202 x86/ucode: Distinguish "ucode already up to date"
    0673eae8e5 x86/cpu-policy: Fix migration from Ice Lake to Cascade Lake
    2bc52041ca tools/libxs: Open /dev/xen/xenbus fds as O_CLOEXEC
    a4c5bbb9db VT-d: correct ATS checking for root complex integrated devices
    47cf06c09a xen/x86: Fix Syntax warning in gen-cpuid.py
    026542c857 xen/xsm: Wire up get_dom0_console
    f0ff1d9cb9 x86/spec: adjust logic that elides lfence
    0b0c7dca70 x86/spec: fix reporting of BHB clearing usage from guest entry points
    eb7059767c x86/MTRR: correct inadvertently inverted WC check
    af0e9ba44a x86/rtc: Avoid UIP flag being set for longer than expected
    8bdcb0b98b altcall: fix __alt_call_maybe_initdata so it's safe for livepatch
    2d38302c33 x86/entry: Fix build with older toolchains
    d152a04246 Update CHANGELOG.md with 4.18.2 line
    b2863e468e Update Xen version to 4.18.2
    40f2c69ad8 x86/spec-ctrl: Support the "long" BHB loop sequence
    9be85b14aa x86/spec-ctrl: Wire up the Native-BHI software sequences
    72a357f4fa x86/spec-ctrl: Software BHB-clearing sequences
    73a4229807 x86/spec-ctrl: Support BHI_DIS_S in order to mitigate BHI
    2be76f2018 x86/tsx: Expose RTM_ALWAYS_ABORT to guests
    62844c4415 x86: Drop INDIRECT_JMP
    9fd732d18d x86: Use indirect calls in reset-stack infrastructure
    40a6795480 x86/spec-ctrl: Widen the {xen,last,default}_spec_ctrl fields
    fb12e8d8f7 x86/vmx: Add support for virtualize SPEC_CTRL
    a6cefb2686 x86/spec-ctrl: Detail the safety properties in SPEC_CTRL_ENTRY_*
    ccc6603b79 x86/spec-ctrl: Simplify DO_COND_IBPB
    5b28a4af1f x86/spec_ctrl: Hold SCF in %ebx across SPEC_CTRL_ENTRY_{PV,INTR}
    9bc337497c x86/entry: Arrange for %r14 to be STACK_END across SPEC_CTRL_ENTRY_FROM_PV
    e382cddcc2 x86/spec-ctrl: Rework conditional safety for SPEC_CTRL_ENTRY_*
    57e5cab3de x86/spec-ctrl: Rename spec_ctrl_flags to scf
    32cdecf1c3 x86/cpuid: Don't expose {IPRED,RRSBA,BHI}_CTRL to PV guests
    a482be9211 x86/alternatives: fix .init section reference in _apply_alternatives()
    855e261337 x86/tsx: Cope with RTM_ALWAYS_ABORT vs RTM mismatch
    125b1a7808 x86/spec-ctrl: Move __read_mostly data into __ro_after_init
    594dd0920f VMX: tertiary execution control infrastructure
    4c2208d06c x86/CPU: convert vendor hook invocations to altcall
    8a8c626281 x86/guest: finish conversion to altcall
    b6fad02a54 x86: arrange for ENDBR zapping from <vendor>_ctxt_switch_masking()
    0f6696a780 x86/spec-ctrl: Expose BHI_CTRL to guests
    a546399829 x86/spec-ctrl: Expose RRSBA_CTRL to guests
    fa7f2f9a86 x86/spec-ctrl: Expose IPRED_CTRL to guests
    1fe30f552a IRQ: generalize [gs]et_irq_regs()
    f7bd03b608 x86/MCE: switch some callback invocations to altcall
    9fdbcd84d3 x86/MCE: separate BSP-only initialization
    b06cf0701a x86/PV: avoid indirect call for I/O emulation quirk hook
    a2922d8097 x86/MTRR: avoid several indirect calls
    5c5d4eeee4 core-parking: use alternative_call()
    ba951c5f29 x86/HPET: avoid an indirect call
    a44c2c9f89 cpufreq: finish conversion to altcall
    6b8ee35088 x86/APIC: finish genapic conversion to altcall
    6d4055b9a5 x86/spec-ctrl: Fix BTC/SRSO mitigations
    1166467ed3 hypercall_xlat_continuation: Replace BUG_ON with domain_crash
    429a125dba x86/HVM: clear upper halves of GPRs upon entry from 32-bit code
    17cf285d87 tests/resource: Fix HVM guest in !SHADOW builds
    5c4aacab17 x86/boot: Support the watchdog on newer AMD systems
    a790c670bb x86/boot: Improve the boot watchdog determination of stuck cpus
    d0173bbed1 x86/livepatch: Relax permissions on rodata too
    4fc27254de xen/virtual-region: Include rodata pointers
    8c13f6c565 xen/virtual-region: Rename the start/end fields
    b576e09b66 x86/cpu-policy: Fix visibility of HTT/CMP_LEGACY in max policies
    03cc579ae3 x86/cpu-policy: Hide x2APIC from PV guests
    0a8b92d0a4 tools/oxenstored: Make Quota.t pure
    3f3158fc32 tools/oxenstored: Use Map instead of Hashtbl for quotas
    c9ea3b49a5 x86/PoD: tie together P2M update and increment of entry count
    cb7b84d3d5 x86/boot: Fix setup_apic_nmi_watchdog() to fail more cleanly
    62d9ca19f9 x86/mm: use block_lock_speculation() in _mm_write_lock()
    3d67ba0371 update Xen version to 4.18.2-pre
    ea82c8cdbf update Xen version to 4.18.1
    4da8ca9cb9 x86: protect conditional lock taking from speculative execution

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

2 files changed, 86 insertions, 2 deletions

diff --git a/recipes-extended/xen/README.test b/recipes-extended/xen/README.test
new file mode 100644
index 00000000..4d45aab8
--- /dev/null
+++ b/recipes-extended/xen/README.test
@@ -0,0 +1,84 @@
+    1  xl
+    2  xl list
+    3  xl console
+    4  xl console -n 0
+    5  xl -n0 console
+    6  xl -n 0 console
+    7  xl console -n 0
+    8  xl console Domain-0
+    9  xm
+   10  wget
+   11  wget https://www.alpinelinux.org/downloads/
+   12  wget https://dl-cdn.alpinelinux.org/alpine/v3.19/releases/x86_64/alpine-standard-3.19.1-x86_64.iso
+   13  rm alpine-standard-3.19.1-x86_64.iso
+   14  wget https://dl-cdn.alpinelinux.org/alpine/v3.19/releases/x86_64/alpine-virt-3.19.1-x86_64.iso
+   15   mount -t iso9660 -o loop /data/alpine-virt-3.19.1-x86_64.iso  /media/cdrom
+   16  ll
+   17  ls
+   18  mount -t iso9660 -o loop alpine-virt-3.19.1-x86_64.iso /media/cdrom^
+   19  ls /media/
+   20  mkdir /media/cdrom
+   21  mount -t iso9660 -o loop alpine-virt-3.19.1-x86_64.iso /media/cdrom
+   22  ls /media/cdrom/
+   23  df -kh .
+   24  dd if=/dev/zero of=/data/a1.img bs=1M count=300
+   25  mkdir /data
+   26  dd if=/dev/zero of=/data/a1.img bs=1M count=300
+
+
+-------------------
+
+ssh from the host (if using slirp): https://docs.yoctoproject.org/dev-manual/qemu.html
+
+ssh root@127.0.0.1 -p 2222
+
+-------------------
+
+Install a guest:
+
+https://wiki.alpinelinux.org/wiki/Create_Alpine_Linux_PV_DomU
+
+
+----------------
+
+Add this:
+autoballoon=0
+
+to: 
+
+ /etc/xen/xl.conf 
+
+----------------
+
+# /etc/xen/a1.cfg
+
+# Alpine Linux PV DomU
+
+# Kernel paths for install
+kernel = "/media/cdrom/boot/vmlinuz-virt"
+ramdisk = "/media/cdrom/boot/initramfs-virt"
+extra="modules=loop,squashfs console=hvc0"
+
+# Path to HDD and iso file
+disk = [
+        'format=raw, vdev=xvda, access=w, target=/data/a1.img',
+        'format=raw, vdev=xvdc, access=r, devtype=cdrom, target=/home/root/alpine-virt-3.19.1-x86_64.iso'
+       ]
+
+# Network configuration
+vif = ['bridge=br0']
+
+# DomU settings
+memory = 512
+name = "wqalpine-a1"
+vcpus = 1
+maxvcpus = 1 
+
+device_model_version="qemu-xen"
+device_model_override="/bin/true"
+
+---------------------------
+
+xl create -f /etc/xen/a1.cfg  -c
+
+
diff --git a/recipes-extended/xen/xen_4.18.bb b/recipes-extended/xen/xen_4.18.bb
index 2ad7704e..4f235bd3 100644
--- a/recipes-extended/xen/xen_4.18.bb
+++ b/recipes-extended/xen/xen_4.18.bb
@@ -1,7 +1,7 @@
 # tag: RELEASE-4.18.0
-SRCREV ?= "4da8ca9cb9cfdb92c9dd09d5270ae16a3b2dbc89"
+SRCREV ?= "01f7a3c792241d348a4e454a30afdf6c0d6cd71c"
 
-XEN_REL ?= "4.18"
+XEN_REL ?= "4.18.2"
 XEN_BRANCH ?= "stable-4.18"
 
 SRC_URI = " \