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Re: [PATCH v2 23/39] xen/riscv: introduce asm/guest_access.h
- To: Oleksii <oleksii.kurochko@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 18 Dec 2023 11:10:51 +0100
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- Cc: Alistair Francis <alistair.francis@xxxxxxx>, Bob Eshleman <bobbyeshleman@xxxxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 18 Dec 2023 10:10:56 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 18.12.2023 11:02, Oleksii wrote:
> On Thu, 2023-12-14 at 15:06 +0100, Jan Beulich wrote:
>> On 24.11.2023 11:30, Oleksii Kurochko wrote:
>>> --- /dev/null
>>> +++ b/xen/arch/riscv/include/asm/guest_access.h
>>> @@ -0,0 +1,29 @@
>>> +#ifndef __ASM_RISCV_GUEST_ACCESS_H__
>>> +#define __ASM_RISCV_GUEST_ACCESS_H__
>>> +
>>> +#include <xen/types.h>
>>> +
>>> +unsigned long raw_copy_to_guest(void *to, const void *from,
>>> unsigned len);
>>> +unsigned long raw_copy_from_guest(void *to, const void *from,
>>> unsigned len);
>>
>> For the full build to work, you will need to implement these
>> somewhere.
>> From the titles of further patches I can't guess where that would be.
>> Note how PPC has decided to have these be inline dummies for the time
>> being. It also looks as if you would also need raw_clear_guest()?
> It is implemented in xen/arch/riscv/stubs.c:362,367.
Ah, that's patch 37, which I didn't get to yet.
Jan
> Regarding raw_clear_guest() I'll double check. I don't have a
> compilation issue with it, so I ignored this macros.
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