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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


             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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