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From: Marc Hartmayer <mhartmay@linux.ibm.com>
To: Janosch Frank <frankja@linux.ibm.com>, qemu-devel@nongnu.org
Cc: marcandre.lureau@redhat.com, pbonzini@redhat.com,
	mhartmay@linux.ibm.com,  borntraeger@linux.ibm.com,
	imbrenda@linux.ibm.com, pasic@linux.ibm.com, cohuck@redhat.com,
	thuth@redhat.com, qemu-s390x@nongnu.org, seiden@linux.ibm.com,
	scgl@linux.ibm.com
Subject: Re: [PATCH v6 02/10] dump: Write ELF section headers right after ELF header
Date: Mon, 17 Oct 2022 14:49:09 +0200	[thread overview]
Message-ID: <87edv6ehtm.fsf@linux.ibm.com> (raw)
In-Reply-To: <20221017083822.43118-3-frankja@linux.ibm.com>

Janosch Frank <frankja@linux.ibm.com> writes:

> Let's start bundling the writes of the headers and of the data so we
> have a clear ordering between them. Since the ELF header uses offsets
> to the headers we can freely order them.
>
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> ---
>  dump/dump.c | 31 ++++++++++++++-----------------
>  1 file changed, 14 insertions(+), 17 deletions(-)
>
> diff --git a/dump/dump.c b/dump/dump.c
> index e7a3b54ebe..b168a25321 100644
> --- a/dump/dump.c
> +++ b/dump/dump.c
> @@ -583,6 +583,8 @@ static void dump_begin(DumpState *s, Error **errp)
>       *   --------------
>       *   |  elf header |
>       *   --------------
> +     *   |  sctn_hdr   |
> +     *   --------------

While you’re at it, I would suggest to add the location for the program
headers (phdr) as well. This would it make easier to understand the
memory layout & the code below as well.

I guess it looks like:

…
---------------
|  sctn_hdr   |
---------------
|  prog_hdr   |
---------------
…


[…snip]


  parent reply	other threads:[~2022-10-17 12:53 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-17  8:38 [PATCH v6 00/10] dump: Add arch section and s390x PV dump Janosch Frank
2022-10-17  8:38 ` [PATCH v6 01/10] dump: Use a buffer for ELF section data and headers Janosch Frank
2022-10-17  9:45   ` Marc-André Lureau
2022-10-17  8:38 ` [PATCH v6 02/10] dump: Write ELF section headers right after ELF header Janosch Frank
2022-10-17  9:45   ` Marc-André Lureau
2022-10-17 12:49   ` Marc Hartmayer [this message]
2022-10-17 13:59     ` Janosch Frank
2022-10-17 17:12       ` Marc Hartmayer
2022-10-17  8:38 ` [PATCH v6 03/10] dump: Reorder struct DumpState Janosch Frank
2022-10-17  8:38 ` [PATCH v6 04/10] dump: Reintroduce memory_offset and section_offset Janosch Frank
2022-10-17  9:45   ` Marc-André Lureau
2022-10-17  8:38 ` [PATCH v6 05/10] dump: Add architecture section and section string table support Janosch Frank
2022-10-17  9:45   ` Marc-André Lureau
2022-10-17 11:32     ` [PATCH v7] " Janosch Frank
2022-10-17  8:38 ` [PATCH v6 06/10] s390x: Add protected dump cap Janosch Frank
2022-10-17  8:38 ` [PATCH v6 07/10] s390x: Introduce PV query interface Janosch Frank
2022-10-17  8:38 ` [PATCH v6 08/10] RFC: elf.h changes Janosch Frank
2022-10-21 12:28   ` Thomas Huth
2022-10-17  8:38 ` [PATCH v6 09/10] s390x: Add KVM PV dump interface Janosch Frank
2022-10-20 11:03   ` Steffen Eiden
2022-10-24 18:36   ` Marc-André Lureau
2022-10-25  7:27     ` Janosch Frank
2022-10-17  8:38 ` [PATCH v6 10/10] s390x: pv: Add dump support Janosch Frank
2022-10-20 11:03   ` Steffen Eiden
2022-10-21 12:31 ` [PATCH v6 00/10] dump: Add arch section and s390x PV dump Thomas Huth
2022-10-21 12:48   ` Marc-André Lureau

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