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 <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> (cherry picked from commit 301c65f49f9602f39b9f3ce0ad9ff70d4bda7226) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> (Mjt: fixup linux-user/syscall.c to before v8.1.0-2602-ge57039ddab "target/riscv: rename ext_icboz to ext_zicboz")
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@ -9058,6 +9058,8 @@ static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count)
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#define RISCV_HWPROBE_MISALIGNED_UNSUPPORTED (4 << 0)
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#define RISCV_HWPROBE_MISALIGNED_MASK (7 << 0)
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#define RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE 6
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struct riscv_hwprobe {
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abi_llong key;
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abi_ullong value;
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@ -9102,6 +9104,10 @@ static void risc_hwprobe_fill_pairs(CPURISCVState *env,
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case RISCV_HWPROBE_KEY_CPUPERF_0:
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__put_user(RISCV_HWPROBE_MISALIGNED_FAST, &pair->value);
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break;
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case RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE:
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value = cfg->ext_icboz ? cfg->cboz_blocksize : 0;
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__put_user(value, &pair->value);
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break;
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default:
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__put_user(-1, &pair->key);
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break;
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