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Re: [PATCH v2 1/4] x86/shadow: Rework trace_shadow_gen() into sh_trace_va()
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 22 May 2024 15:40:49 +0200
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Wed, 22 May 2024 13:41:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 22.05.2024 15:17, Andrew Cooper wrote:
> --- a/xen/arch/x86/mm/shadow/multi.c
> +++ b/xen/arch/x86/mm/shadow/multi.c
> @@ -1974,13 +1974,17 @@ typedef u32 guest_va_t;
> typedef u32 guest_pa_t;
> #endif
>
> -static inline void trace_shadow_gen(u32 event, guest_va_t va)
> +/* Shadow trace event with GUEST_PAGING_LEVELS folded into the event field.
> */
> +static void sh_trace(uint32_t event, unsigned int extra, const void
> *extra_data)
> +{
> + trace(event | ((GUEST_PAGING_LEVELS - 2) << 8), extra, extra_data);
> +}
> +
> +/* Shadow trace event with the guest's linear address. */
> +static void sh_trace_va(uint32_t event, guest_va_t va)
> {
> if ( tb_init_done )
> - {
> - event |= (GUEST_PAGING_LEVELS-2)<<8;
> - trace(event, sizeof(va), &va);
> - }
> + sh_trace(event, sizeof(va), &va);
> }
If any tb_init_done check, then perhaps rather in sh_trace()? With that
(and provided you agree)
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Jan
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