Add RISC-V support by David Abdurachmanov

config.yaml

@@ -0,0 +1,15 @@
+actions:
+  - modify_release:
+    - suffix: ".alma.1"
+      enabled: true
+
+  - changelog_entry:
+      - name: "Andrew Lukoshko"
+        email: "alukoshko@almalinux.org"
+        line:
+          - "Add RISC-V support by David Abdurachmanov <davidlt@rivosinc.com>"
+
+  - add_files:
+      - type: "patch"
+        name: "0001-Add-support-for-riscv64.patch"
+        number: 1001

files/0001-Add-support-for-riscv64.patch

@@ -0,0 +1,64 @@
+From b42d1b1d3fb5447c2804b56ceb864e2c8b47d54a Mon Sep 17 00:00:00 2001
+From: David Abdurachmanov <davidlt@rivosinc.com>
+Date: Sun, 20 Apr 2025 05:49:41 +0000
+Subject: [PATCH] Add support for riscv64
+
+Signed-off-by: David Abdurachmanov <davidlt@rivosinc.com>
+---
+ Makefile     | 11 ++++++++++-
+ src/stalld.h |  2 +-
+ 2 files changed, 11 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 4585b6c..5d7259c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -33,6 +33,11 @@ ifeq ($(ARCH),powerpc)
+ USE_BPF := 0
+ MTUNE := -mtune=powerpc
+ endif
++ifeq ($(ARCH),riscv64)
++FCF_PROTECTION := "-fcf-protection=none"
++M64	:=
++MTUNE := -mtune=generic-ooo
++endif
+ 
+ $(info USE_BPF=$(USE_BPF))
+ $(info FCF_PROTECTION=$(FCF_PROTECTION))
+@@ -125,6 +130,10 @@ endif
+ ifeq ($(ARCH),s390x)
+ CLANGARCH=-D__s390x__
+ endif
++ifeq ($(ARCH),riscv64)
++CLANGARCH="-D__riscv"
++CLANGFLAGS="-D__riscv_xlen=64"
++endif
+ 
+ .PHONY:	all tests
+ 
+@@ -145,7 +154,7 @@ bpf/vmlinux.h:
+ # The .bpf.c needs to be transformed into the .bpf.o.
+ # The .bpf.o is then required to build the .skel.h.
+ bpf/stalld.bpf.o: bpf/vmlinux.h bpf/stalld.bpf.c
+-	@$(CLANG) -g -O2 -target bpf $(CLANGARCH) -D__TARGET_ARCH_$(ARCH) $(INCLUDES) $(CLANG_BPF_SYS_INCLUDES) -c $(filter %.c,$^) -o $@
++	@$(CLANG) -g -O2 -target bpf $(CLANGARCH) $(CLANGFLAGS) -D__TARGET_ARCH_$(ARCH) $(INCLUDES) $(CLANG_BPF_SYS_INCLUDES) -c $(filter %.c,$^) -o $@
+ 	@$(LLVM_STRIP) -g $@ # strip useless DWARF info
+ 
+ # This is the second step: The .bpf.o object is translated into
+diff --git a/src/stalld.h b/src/stalld.h
+index 0c4dcee..8d2f92f 100644
+--- a/src/stalld.h
++++ b/src/stalld.h
+@@ -121,7 +121,7 @@ struct stalld_backend {
+ #elif __arm__
+ # define __NR_sched_setattr 380
+ # define __NR_sched_getattr 381
+-#elif __aarch64__ || __loongarch64
++#elif __aarch64__ || __loongarch64 || __riscv
+ # define __NR_sched_setattr 274
+ # define __NR_sched_getattr 275
+ #elif __powerpc__
+-- 
+2.49.0
+
+