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linux-user/riscv: Add Zicboz block size to hwprobe

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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 <palmer@rivosinc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231110173716.24423-1-palmer@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Palmer Dabbelt 2023-11-10 09:37:16 -08:00 committed by Alistair Francis
parent 8fa379170c
commit 301c65f49f
1 changed files with 6 additions and 0 deletions
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6
linux-user/syscall.c
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@ -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;