diff --git a/SOURCES/0001-llvmpipe-use-ppc64le-ppc64-Large-code-model-for-JIT-.patch b/SOURCES/0001-llvmpipe-use-ppc64le-ppc64-Large-code-model-for-JIT-.patch
new file mode 100644
index 0000000..6586da4
--- /dev/null
+++ b/SOURCES/0001-llvmpipe-use-ppc64le-ppc64-Large-code-model-for-JIT-.patch
@@ -0,0 +1,72 @@
+From d0ff02e567541468309923fed2320da6cbd81779 Mon Sep 17 00:00:00 2001
+From: Ben Crocker <bcrocker@redhat.com>
+Date: Thu, 21 Nov 2019 17:33:31 -0500
+Subject: [PATCH] llvmpipe: use ppc64le/ppc64 Large code model for JIT-compiled
+ shaders
+
+Large programs, e.g. gnome-shell and firefox, may tax the
+addressability of the Medium code model once a (potentially unbounded)
+number of dynamically generated JIT-compiled shader programs are
+linked in and relocated.  Yet the default code model as of LLVM 8 is
+Medium or even Small.
+
+The cost of changing from Medium to Large is negligible:
+- an additional 8-byte pointer stored immediately before the shader entrypoint;
+- change an add-immediate (addis) instruction to a load (ld).
+
+Testing with WebGL Conformance
+(https://www.khronos.org/registry/webgl/sdk/tests/webgl-conformance-tests.html)
+yields clean runs with this change (and crashes without it).
+
+Testing with glxgears shows no detectable performance difference.
+
+Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1753327, 1543572, 1747110, and 1582226
+
+Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/223
+
+Co-authored by: Nemanja Ivanovic <nemanjai@ca.ibm.com>, Tom Stellard <tstellar@redhat.com>
+
+CC: mesa-stable@lists.freedesktop.org
+
+Signed-off-by: Ben Crocker <bcrocker@redhat.com>
+Reviewed-by: Adam Jackson <ajax@redhat.com>
+---
+ src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 15 ++++++++++++++-
+ 1 file changed, 14 insertions(+), 1 deletion(-)
+
+diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+index f307c26d4f7..af891f44684 100644
+--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
++++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+@@ -692,7 +692,19 @@ lp_build_create_jit_compiler_for_module(LLVMExecutionEngineRef *OutJIT,
+     * when not using MCJIT so no instructions are generated which the old JIT
+     * can't handle. Not entirely sure if we really need to do anything yet.
+     */
+-#if defined(PIPE_ARCH_LITTLE_ENDIAN)  && defined(PIPE_ARCH_PPC_64)
++#ifdef PIPE_ARCH_PPC_64
++   /*
++    * Large programs, e.g. gnome-shell and firefox, may tax the addressability
++    * of the Medium code model once dynamically generated JIT-compiled shader
++    * programs are linked in and relocated.  Yet the default code model as of
++    * LLVM 8 is Medium or even Small.
++    * The cost of changing from Medium to Large is negligible:
++    * - an additional 8-byte pointer stored immediately before the shader entrypoint;
++    * - change an add-immediate (addis) instruction to a load (ld).
++    */
++   builder.setCodeModel(CodeModel::Large);
++
++#ifdef PIPE_ARCH_LITTLE_ENDIAN
+    /*
+     * Versions of LLVM prior to 4.0 lacked a table entry for "POWER8NVL",
+     * resulting in (big-endian) "generic" being returned on
+@@ -704,6 +716,7 @@ lp_build_create_jit_compiler_for_module(LLVMExecutionEngineRef *OutJIT,
+     */
+    if (MCPU == "generic")
+       MCPU = "pwr8";
++#endif
+ #endif
+    builder.setMCPU(MCPU);
+    if (gallivm_debug & (GALLIVM_DEBUG_IR | GALLIVM_DEBUG_ASM | GALLIVM_DEBUG_DUMP_BC)) {
+-- 
+2.21.0
+
diff --git a/SPECS/mesa.spec b/SPECS/mesa.spec
index f39f4b4..472b83f 100644
--- a/SPECS/mesa.spec
+++ b/SPECS/mesa.spec
@@ -41,7 +41,7 @@
 Name:           mesa
 Summary:        Mesa graphics libraries
 Version:        19.1.4
-Release:        2%{?rctag:.%{rctag}}%{?dist}
+Release:        3%{?rctag:.%{rctag}}%{?dist}
 
 License:        MIT
 URL:            http://www.mesa3d.org
@@ -58,6 +58,7 @@ Source4:        Mesa-MLAA-License-Clarification-Email.txt
 Source5:	glesv2.pc
 
 Patch0:		0001-mesa-add-support-for-CET-to-x86-x86-64-asm-files.patch
+Patch1:		0001-llvmpipe-use-ppc64le-ppc64-Large-code-model-for-JIT-.patch
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
 
@@ -601,6 +602,9 @@ done
 %endif
 
 %changelog
+* Mon Nov 25 2019 Ben Crocker <bcrocker@redhat.com> - 19.1.4-3
+- Patch to require Large CodeModel for llvmpipe on ppc64
+
 * Fri Aug 09 2019 Dave Airlie <airlied@redhat.com> - 19.1.4-2
 - Add CET support to asm files