diff --git a/buildflags.md b/buildflags.md
index e817020..fc6bc72 100644
--- a/buildflags.md
+++ b/buildflags.md
@@ -608,20 +608,17 @@ tuning in the `gcc` package.  These settings are:
   instructs GCC to use the SSE2 unit for floating point math to avoid
   excess precision issues.  `-mstackrealign` avoids relying on the
   stack alignment guaranteed by the current version of the i386 ABI.
-* **ppc64le**: `-mcpu=power8 -mtune=power8` selects a minimum
-  supported CPU level of POWER8 (the first CPU with ppc64le support)
-  and tunes for POWER8.
-* **s390x**: `-march=zEC12 -mtune=z13` specifies a minimum supported
-  CPU level of zEC12, while optimizing for a subsequent CPU generation
-  (z13).
-* **x86_64**: `-mtune=generic` selects tuning which is expected to
-   beneficial for a broad range of current CPUs.  Distribution-specific
-   defaults for `-march=x86-64-v2` or `-march=x86-64-v3` may be
-   applied.  The default can be overriden (for any distribution)
-   by specifying `--target x86_64_v2`, `--target x86_64_v3`,
-   `--target x86_64_v4` in the `rpmbuild` invocation.
-   With the GCC toolchain, TLS descriptors are enabled using
-   `-mtls-dialect=gnu2`.
+* **ppc64le**: `-mcpu=power9 -mtune=power10` selects a minimum
+  supported CPU level of POWER9 and tunes for POWER10.
+* **s390x**: `-march=z14 -mtune=z15` specifies a minimum supported CPU
+  level of z14, while optimizing for a subsequent CPU generation
+  (z15).
+* **x86_64**: `-march=x86-64-v3 -mtune=generic` builds for the
+  [x86-64-v3 micro-architecture level](https://gitlab.com/x86-psABIs/x86-64-ABI/-/blob/master/x86-64-ABI/low-level-sys-info.tex)
+  and selects tuning which is expected to beneficial for a broad range
+  of current CPUs.
+  With the GCC toolchain, TLS descriptors are enabled using
+  `-mtls-dialect=gnu2`.
 * **aarch64** does not have any architecture-specific tuning.
 
 ### Vala-specific compiler flags
diff --git a/macros b/macros
index 09908ed..e3589eb 100644
--- a/macros
+++ b/macros
@@ -154,7 +154,8 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
 # Also used for s390.
 %__cflags_arch_s390x %[0%{?rhel} >= 9 ? "-march=z14 -mtune=z15" : "-march=z13 -mtune=z14"]
 
-%__cflags_arch_ppc64le %[0%{?rhel} >= 9 ? "-mcpu=power9 -mtune=power9" : "-mcpu=power8 -mtune=power8"]
+%_ppc64le_tune_level %[0%{?rhel} >= 10 ? "-mtune=power10" : "-mtune=power9"]
+%__cflags_arch_ppc64le %[0%{?rhel} >= 9 ? "-mcpu=power9 %{_ppc64le_tune_level}" : "-mcpu=power8 -mtune=power8" ]
 
 #==============================================================================
 # ---- configure and makeinstall.
diff --git a/redhat-rpm-config.spec b/redhat-rpm-config.spec
index 23a905c..e5ab85c 100644
--- a/redhat-rpm-config.spec
+++ b/redhat-rpm-config.spec
@@ -4,7 +4,7 @@
 # 2) When making changes, increment the version (in baserelease) by 1.
 #    rpmdev-bumpspec and other tools update the macro below, which is used
 #    in Version: to get the desired effect.
-%global baserelease 285
+%global baserelease 286
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
@@ -259,9 +259,12 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora common.lua
 %doc buildflags.md
 
 %changelog
-* Wed Jul 17 2024 Eduard Abdullin <eabdullint@almalinux.org> - 285-1.alma.1
+* Thu Oct 24 2024 Eduard Abdullin <eabdullint@almalinux.org> - 286-1.alma.1
 - Enable frame pointers for AlmaLinux 10+
 
+* Wed Sep 25 2024 Siddhesh Poyarekar <siddhesh@redhat.com> - 286-1
+- Change ppc64le tuning to Power 10 for RHEL10 and beyond (RHEL-58074)
+
 * Mon Jun 24 2024 Troy Dawson <tdawson@redhat.com> - 285-1
 - Bump release for June 2024 mass rebuild