[PATCH 2/6] virt: bao: Add Bao IPC shared memory driver

[João Peixoto]

On 1/14/26 20:37, Andrew Jones wrote:
> On Wed, Jan 07, 2026 at 04:28:25PM +0000,joaopeixoto at osyx.tech wrote:
> ...
>> diff --git a/arch/riscv/include/asm/bao.h b/arch/riscv/include/asm/bao.h
>> new file mode 100644
>> index 000000000000..35658f37e1bd
>> --- /dev/null
>> +++ b/arch/riscv/include/asm/bao.h
>> @@ -0,0 +1,31 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +/*
>> + * Bao Hypervisor Hypercall Interface
>> + *
>> + * Copyright (c) Bao Project and Contributors. All rights reserved.
>> + *
>> + * Authors:
>> + *	João Peixoto<joaopeixoto at osyx.tech>
>> + *	José Martins<jose at osyx.tech>
>> + *	David Cerdeira<davidmcerdeira at osyx.tech>
>> + */
>> +
>> +#ifndef __ASM_RISCV_BAO_H
>> +#define __ASM_RISCV_BAO_H
>> +
>> +#include <asm/sbi.h>
>> +
>> +#define BAO_SBI_EXT_ID 0x08000ba0
>> +
>> +static inline unsigned long bao_ipcshmem_hypercall(unsigned long hypercall_id,
>> +						   unsigned long ipcshmem_id)
>> +{
>> +	struct sbiret ret;
>> +
>> +	ret = sbi_ecall(BAO_SBI_EXT_ID, hypercall_id, ipcshmem_id, 0, 0, 0, 0,
>> +			0);
> Just let lines like these stick out. We have up to 100 chars and these
> types of few-char wraps are the most annoying.
>
> Thanks,
> drew
Agreed. In v3 the IPC hypercall ID is a shared constant, so
bao_ipcshmem_hypercall() now takes a single argument and its declaration
fits on one line, and I unwrapped the remaining few-char wraps. For example
the RISC-V ecall is now a single line:

     ret = sbi_ecall(BAO_SBI_EXT_ID, BAO_IPCSHMEM_HYPERCALL_ID, 
ipcshmem_id, 0, 0, 0, 0, 0);

Thanks.