From: Chen Pei <cp0613@linux.alibaba.com>
To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
memxor@gmail.com, bjorn@kernel.org, puranjay@kernel.org
Cc: eddyz87@gmail.com, martin.lau@linux.dev, song@kernel.org,
yonghong.song@linux.dev, jolsa@kernel.org, emil@etsalapatis.com,
ihor.solodrai@linux.dev, pulehui@huawei.com, pjw@kernel.org,
palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr,
luke.r.nels@gmail.com, xi.wang@gmail.com, shuah@kernel.org,
rgbi3307@gmail.com, guoren@kernel.org, bpf@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH bpf-next 2/3] selftests/bpf: Enable private stack tests for riscv64
Date: Thu, 15 Oct 2026 10:12:37 +0800 [thread overview]
Message-ID: <20261015021238.5657-3-cp0613@linux.alibaba.com> (raw)
In-Reply-To: <20261015021238.5657-1-cp0613@linux.alibaba.com>
The RV64 JIT now supports the private stack. Allow the existing
verifier and struct_ops private-stack tests to run on riscv64 and add
the expected RV64 JITed instruction patterns.
Signed-off-by: Chen Pei <cp0613@linux.alibaba.com>
---
.../bpf/prog_tests/struct_ops_private_stack.c | 3 +-
.../bpf/progs/verifier_private_stack.c | 41 ++++++++++++++++++-
2 files changed, 42 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c b/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c
index 2b3ec2b79091..103179ff8733 100644
--- a/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c
+++ b/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c
@@ -6,7 +6,8 @@
#include "struct_ops_private_stack_recur.skel.h"
#include "struct_ops_private_stack_large.skel.h"
-#if defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__)
+#if defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__) || \
+ (defined(__riscv) && __riscv_xlen == 64)
static void test_private_stack(void)
{
struct struct_ops_private_stack *skel;
diff --git a/tools/testing/selftests/bpf/progs/verifier_private_stack.c b/tools/testing/selftests/bpf/progs/verifier_private_stack.c
index 3d9994a52464..d9cebbc7355d 100644
--- a/tools/testing/selftests/bpf/progs/verifier_private_stack.c
+++ b/tools/testing/selftests/bpf/progs/verifier_private_stack.c
@@ -8,7 +8,8 @@
/* From include/linux/filter.h */
#define MAX_BPF_STACK 512
-#if defined(__TARGET_ARCH_x86) || defined(__TARGET_ARCH_arm64)
+#if defined(__TARGET_ARCH_x86) || defined(__TARGET_ARCH_arm64) || \
+ (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)
struct elem {
struct bpf_timer t;
@@ -42,6 +43,14 @@ __jited(" mov x0, #0x2a")
__jited(" str x0, [x27]")
__jited("...")
__jited(" ldp x25, x27, [sp], {{.*}}")
+__arch_riscv64
+__jited(" addi sp, sp, -0x20")
+__jited("...")
+__jited(" sd s5, 0x10(sp)")
+__jited("...")
+__jited(" sd a0, -0x100(s5)")
+__jited("...")
+__jited(" ld s5, 0x10(sp)")
__naked void private_stack_single_prog(void)
{
asm volatile (" \
@@ -60,6 +69,10 @@ __jited(" subq $0x8, %rsp")
__arch_arm64
__jited(" mov x25, sp")
__jited(" sub sp, sp, #0x10")
+__arch_riscv64
+__jited(" addi sp, sp, -0x30")
+__jited("...")
+__jited(" addi s5, sp, 0x10")
__naked void no_private_stack_nested(void)
{
asm volatile (" \
@@ -113,6 +126,14 @@ __jited(" str x0, [x27]")
__jited(" bl {{.*}}")
__jited("...")
__jited(" ldp x25, x27, [sp], {{.*}}")
+__arch_riscv64
+__jited(" addi sp, sp, -0x20")
+__jited("...")
+__jited(" sd s5, 0x8(sp)")
+__jited("...")
+__jited(" sd a0, -0x200(s5)")
+__jited("...")
+__jited(" ld s5, 0x8(sp)")
__naked void private_stack_nested_1(void)
{
asm volatile (" \
@@ -183,6 +204,16 @@ __jited(" bl 0x{{.*}}")
__jited(" mov x8, x0")
__jited(" mov x8, #0x0")
__jited(" ldp x25, x27, [sp], {{.*}}")
+__arch_riscv64
+__jited("func #1")
+__jited("...")
+__jited(" addi sp, sp, -0x20")
+__jited("...")
+__jited(" sd s5, 0x8(sp)")
+__jited("...")
+__jited(" sd a0, -0x200(s5)")
+__jited("...")
+__jited(" ld s5, 0x8(sp)")
__naked void private_stack_callback(void)
{
asm volatile (" \
@@ -313,6 +344,10 @@ __arch_arm64
__jited(" mrs x10, TPIDR_EL{{[0-1]}}")
__jited(" add x27, x27, x10")
__jited(" add x25, x27, {{.*}}")
+__arch_riscv64
+__jited(" addi sp, sp, -0x20")
+__jited("...")
+__jited(" sd s5, 0x8(sp)")
int private_stack_async_callback_1(void)
{
struct bpf_timer *arr_timer;
@@ -342,6 +377,10 @@ __arch_x86_64
__jited(" subq $0x100, %rsp")
__arch_arm64
__jited(" sub sp, sp, #0x100")
+__arch_riscv64
+__jited(" addi sp, sp, -0x120")
+__jited("...")
+__jited(" addi s5, sp, 0x100")
int private_stack_async_callback_2(void)
{
struct bpf_timer *arr_timer;
--
2.50.1
next prev parent reply other threads:[~2026-10-15 2:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-15 2:12 [PATCH bpf-next 0/3] riscv: bpf: Add BPF private stack support Chen Pei
2026-10-15 2:12 ` [PATCH bpf-next 1/3] " Chen Pei
2026-10-15 2:58 ` bot+bpf-ci
2026-10-15 2:12 ` Chen Pei [this message]
2026-10-15 2:12 ` [PATCH bpf-next 3/3] selftests/bpf: Add a runtime test for private stack and stack arguments Chen Pei
2026-10-15 2:59 ` bot+bpf-ci
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20261015021238.5657-3-cp0613@linux.alibaba.com \
--to=cp0613@linux.alibaba.com \
--cc=alex@ghiti.fr \
--cc=andrii@kernel.org \
--cc=aou@eecs.berkeley.edu \
--cc=ast@kernel.org \
--cc=bjorn@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=eddyz87@gmail.com \
--cc=emil@etsalapatis.com \
--cc=guoren@kernel.org \
--cc=ihor.solodrai@linux.dev \
--cc=jolsa@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=luke.r.nels@gmail.com \
--cc=martin.lau@linux.dev \
--cc=memxor@gmail.com \
--cc=palmer@dabbelt.com \
--cc=pjw@kernel.org \
--cc=pulehui@huawei.com \
--cc=puranjay@kernel.org \
--cc=rgbi3307@gmail.com \
--cc=shuah@kernel.org \
--cc=song@kernel.org \
--cc=xi.wang@gmail.com \
--cc=yonghong.song@linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®