From: Jesse Taube <jesse@rivosinc.com>
To: kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-kselftest@vger.kernel.org
Cc: "Clément Léger" <cleger@rivosinc.com>,
"Charlie Jenkins" <charlie@rivosinc.com>,
"Jesse Taube" <jesse@rivosinc.com>,
"Andrew Jones" <andrew.jones@linux.dev>
Subject: [kvm-unit-tests PATCH] riscv: Use norvc over arch, -c
Date: Thu, 3 Jul 2025 18:58:37 -0700 [thread overview]
Message-ID: <20250704015837.1700249-1-jesse@rivosinc.com> (raw)
The Linux kernel main tree uses "norvc" over
"arch, -c" change to match this.
GCC 15 started to add _zca_zcd to the assembler flags causing a bug
which made "arch, -c" generate a compressed instruction.
Link: https://sourceware.org/bugzilla/show_bug.cgi?id=33128
Cc: Clément Léger <cleger@rivosinc.com>
Signed-off-by: Jesse Taube <jesse@rivosinc.com>
---
riscv/isa-dbltrp.c | 2 +-
riscv/sbi-dbtr.c | 2 +-
riscv/sbi-fwft.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/riscv/isa-dbltrp.c b/riscv/isa-dbltrp.c
index b7e21589..af12860c 100644
--- a/riscv/isa-dbltrp.c
+++ b/riscv/isa-dbltrp.c
@@ -26,7 +26,7 @@ do { \
unsigned long value = 0; \
asm volatile( \
" .option push\n" \
- " .option arch,-c\n" \
+ " .option norvc\n" \
" sw %0, 0(%1)\n" \
" .option pop\n" \
: : "r" (value), "r" (ptr) : "memory"); \
diff --git a/riscv/sbi-dbtr.c b/riscv/sbi-dbtr.c
index c4ccd81d..129f79b8 100644
--- a/riscv/sbi-dbtr.c
+++ b/riscv/sbi-dbtr.c
@@ -134,7 +134,7 @@ static __attribute__((naked)) void exec_call(void)
{
/* skip over nop when triggered instead of ret. */
asm volatile (".option push\n"
- ".option arch, -c\n"
+ ".option norvc\n"
"nop\n"
"ret\n"
".option pop\n");
diff --git a/riscv/sbi-fwft.c b/riscv/sbi-fwft.c
index 8920bcb5..fda7eb52 100644
--- a/riscv/sbi-fwft.c
+++ b/riscv/sbi-fwft.c
@@ -174,7 +174,7 @@ static void fwft_check_misaligned_exc_deleg(void)
* Disable compression so the lw takes exactly 4 bytes and thus
* can be skipped reliably from the exception handler.
*/
- ".option arch,-c\n"
+ ".option norvc\n"
"lw %[val], 1(%[val_addr])\n"
".option pop\n"
: [val] "+r" (ret.value)
--
2.43.0
next reply other threads:[~2025-07-04 1:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-04 1:58 Jesse Taube [this message]
2025-07-04 8:26 ` [kvm-unit-tests PATCH] riscv: Use norvc over arch, -c Andrew Jones
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