lttng-modules: fix build against v5.10+

lttng-modules doesn't currently build against the lastest 5.10-rc
versions.

Upstream lttng does have fixes for the issues, but hasn't done a
release that contains them yet. There are other patches on the
2.12.x branch, but I've skipped them for now as they aren't
necessary for 5.10 builds, and can be picked up with the next
full update.

We also bump the dev-upstream hash to make them easier to pickup
for those building from git.

(From OE-Core rev: 47201e98bb293d59c5d41986d066fd7614b914fa)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/meta/recipes-kernel/lttng/lttng-modules/0012-fix-kvm-x86-mmu-Add-TDP-MMU-PF-handler-v5.10.patch b/meta/recipes-kernel/lttng/lttng-modules/0012-fix-kvm-x86-mmu-Add-TDP-MMU-PF-handler-v5.10.patch
new file mode 100644
index 0000000000..8651bded99
--- /dev/null
+++ b/meta/recipes-kernel/lttng/lttng-modules/0012-fix-kvm-x86-mmu-Add-TDP-MMU-PF-handler-v5.10.patch
@@ -0,0 +1,82 @@
+From e30866f96b3ab02639f429e4bd34e59b3a336579 Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Mon, 26 Oct 2020 14:28:35 -0400
+Subject: [PATCH 12/19] fix: kvm: x86/mmu: Add TDP MMU PF handler (v5.10)
+
+See upstream commit :
+
+  commit bb18842e21111a979e2e0e1c5d85c09646f18d51
+  Author: Ben Gardon <bgardon@google.com>
+  Date:   Wed Oct 14 11:26:50 2020 -0700
+
+    kvm: x86/mmu: Add TDP MMU PF handler
+
+    Add functions to handle page faults in the TDP MMU. These page faults
+    are currently handled in much the same way as the x86 shadow paging
+    based MMU, however the ordering of some operations is slightly
+    different. Future patches will add eager NX splitting, a fast page fault
+    handler, and parallel page faults.
+
+    Tested by running kvm-unit-tests and KVM selftests on an Intel Haswell
+    machine. This series introduced no new failures.
+
+Upstream-Status: Backport
+
+Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+Change-Id: Ie56959cb6c77913d2f1188b0ca15da9114623a4e
+---
+ .../lttng-module/arch/x86/kvm/mmutrace.h      | 20 ++++++++++++++++++-
+ probes/lttng-probe-kvm-x86-mmu.c              |  5 +++++
+ 2 files changed, 24 insertions(+), 1 deletion(-)
+
+diff --git a/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h b/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h
+index e5470400..86717835 100644
+--- a/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h
++++ b/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h
+@@ -163,7 +163,25 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(kvm_mmu_page_class, kvm_mmu_prepare_zap_page,
+        TP_ARGS(sp)
+ )
+ 
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,10,0))
++
++LTTNG_TRACEPOINT_EVENT_MAP(
++       mark_mmio_spte,
++
++       kvm_mmu_mark_mmio_spte,
++
++       TP_PROTO(u64 *sptep, gfn_t gfn, u64 spte),
++       TP_ARGS(sptep, gfn, spte),
++
++       TP_FIELDS(
++               ctf_integer_hex(void *, sptep, sptep)
++               ctf_integer(gfn_t, gfn, gfn)
++               ctf_integer(unsigned, access, spte & ACC_ALL)
++               ctf_integer(unsigned int, gen, get_mmio_spte_generation(spte))
++       )
++)
++
++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0))
+ 
+ LTTNG_TRACEPOINT_EVENT_MAP(
+        mark_mmio_spte,
+diff --git a/probes/lttng-probe-kvm-x86-mmu.c b/probes/lttng-probe-kvm-x86-mmu.c
+index 8f981865..5043c776 100644
+--- a/probes/lttng-probe-kvm-x86-mmu.c
++++ b/probes/lttng-probe-kvm-x86-mmu.c
+@@ -31,6 +31,11 @@
+ #include <../../arch/x86/kvm/mmutrace.h>
+ #endif
+ 
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,10,0))
++#include <../arch/x86/kvm/mmu.h>
++#include <../arch/x86/kvm/mmu/spte.h>
++#endif
++
+ #undef TRACE_INCLUDE_PATH
+ #undef TRACE_INCLUDE_FILE
+ 
+-- 
+2.19.1
+