From 301c65f49f9602f39b9f3ce0ad9ff70d4bda7226 Mon Sep 17 00:00:00 2001 From: Palmer Dabbelt Date: Fri, 10 Nov 2023 09:37:16 -0800 Subject: [PATCH] linux-user/riscv: Add Zicboz block size to hwprobe Support for probing the Zicboz block size landed in Linux 6.6, which was released a few weeks ago. This provides the user-configured block size when Zicboz is enabled. Signed-off-by: Palmer Dabbelt Reviewed-by: Alistair Francis Reviewed-by: Daniel Henrique Barboza Message-ID: <20231110173716.24423-1-palmer@rivosinc.com> Signed-off-by: Alistair Francis --- linux-user/syscall.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 16ca5ea7b6..e384e14248 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -8808,6 +8808,8 @@ static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count) #define RISCV_HWPROBE_MISALIGNED_UNSUPPORTED (4 << 0) #define RISCV_HWPROBE_MISALIGNED_MASK (7 << 0) +#define RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE 6 + struct riscv_hwprobe { abi_llong key; abi_ullong value; @@ -8860,6 +8862,10 @@ static void risc_hwprobe_fill_pairs(CPURISCVState *env, case RISCV_HWPROBE_KEY_CPUPERF_0: __put_user(RISCV_HWPROBE_MISALIGNED_FAST, &pair->value); break; + case RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE: + value = cfg->ext_zicboz ? cfg->cboz_blocksize : 0; + __put_user(value, &pair->value); + break; default: __put_user(-1, &pair->key); break;