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From: "Daniel P. Berrangé" <berrange@redhat.com>
To: "Philippe Mathieu-Daudé" <philmd@linaro.org>
Cc: Don Porter <porter@cs.unc.edu>,
	qemu-devel@nongnu.org, dave@treblig.org,
	peter.maydell@linaro.org, nadav.amit@gmail.com,
	richard.henderson@linaro.org
Subject: Re: [PATCH v3 2/6] Convert 'info tlb' to use generic iterator
Date: Mon, 10 Jun 2024 10:13:06 +0100	[thread overview]
Message-ID: <ZmbDosOA7EzarYuJ@redhat.com> (raw)
In-Reply-To: <1dd777bb-184d-4c0d-ad80-afa65e0c58bd@linaro.org>

On Fri, Jun 07, 2024 at 08:02:51AM +0200, Philippe Mathieu-Daudé wrote:
> Hi Don,
> 
> (Cc'ing Daniel for HumanReadableText)
> 
> On 6/6/24 16:02, Don Porter wrote:
> > Signed-off-by: Don Porter <porter@cs.unc.edu>
> > ---
> >   include/hw/core/sysemu-cpu-ops.h |   7 +
> >   monitor/hmp-cmds-target.c        |   1 +
> >   target/i386/cpu.h                |   2 +
> >   target/i386/monitor.c            | 217 ++++++-------------------------
> >   4 files changed, 53 insertions(+), 174 deletions(-)
> > 
> > diff --git a/include/hw/core/sysemu-cpu-ops.h b/include/hw/core/sysemu-cpu-ops.h
> > index eb16a1c3e2..bf3de3e004 100644
> > --- a/include/hw/core/sysemu-cpu-ops.h
> > +++ b/include/hw/core/sysemu-cpu-ops.h
> > @@ -243,6 +243,13 @@ typedef struct SysemuCPUOps {
> >       bool (*mon_flush_page_print_state)(CPUState *cs,
> >                                          struct mem_print_state *state);
> > +    /**
> > +     * @mon_print_pte: Hook called by the monitor to print a page
> > +     * table entry at address addr, with contents pte.
> > +     */
> > +    void (*mon_print_pte) (Monitor *mon, CPUArchState *env, hwaddr addr,
> > +                           hwaddr pte);
> 
> IMO the SysemuCPUOps prototype should not use the monitor and return
> a HumanReadableText:
> 
>       HumanReadableText *(*mon_print_pte)(CPUArchState *env,
>                                           hwaddr addr, hwaddr pte);
> 
> Then define a QMP handler, itself registered to the monitor using
> monitor_register_hmp_info_hrt().

IIUC, this method is called repeatedly from an iterator, so I
think you would need to be instead relpacing the 'Monitor *mon'
parmeter with "GString *str", and print into that buffer.
The HumanReadableText would be created from teh GString higher
up in the call path.


With regards,
Daniel
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  reply	other threads:[~2024-06-10  9:14 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-06 14:02 [PATCH v3 0/6] Rework x86 page table walks Don Porter
2024-06-06 14:02 ` [PATCH v3 1/6] Add an "info pg" command that prints the current page tables Don Porter
2024-06-07  6:09   ` Philippe Mathieu-Daudé
2024-06-07  7:16   ` Daniel P. Berrangé
2024-06-11 18:49     ` Don Porter
2024-06-07 16:57   ` Richard Henderson
2024-06-14 18:16     ` Don Porter
2024-06-07 17:43   ` Richard Henderson
2024-06-14 21:14     ` Don Porter
2024-06-15 15:34       ` Richard Henderson
2024-06-06 14:02 ` [PATCH v3 2/6] Convert 'info tlb' to use generic iterator Don Porter
2024-06-07  6:02   ` Philippe Mathieu-Daudé
2024-06-10  9:13     ` Daniel P. Berrangé [this message]
2024-06-06 14:02 ` [PATCH v3 3/6] Convert 'info mem' " Don Porter
2024-06-10  9:15   ` Daniel P. Berrangé
2024-06-06 14:02 ` [PATCH v3 4/6] Convert x86_cpu_get_memory_mapping() to use generic iterators Don Porter
2024-06-06 14:02 ` [PATCH v3 5/6] Move tcg implementation of x86 get_physical_address into common helper code Don Porter
2024-06-07  6:12   ` Philippe Mathieu-Daudé
2024-06-07 17:03   ` Richard Henderson
2024-06-15 12:49     ` Don Porter
2024-06-06 14:02 ` [PATCH v3 6/6] Convert x86_mmu_translate() to use common code Don Porter
2024-06-07 17:28   ` Richard Henderson

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