From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
To: Juan Quintela <quintela@redhat.com>
Cc: "Eduardo Habkost" <eduardo@habkost.net>,
qemu-devel@nongnu.org, "Peter Xu" <peterx@redhat.com>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
"Yanan Wang" <wangyanan55@huawei.com>,
"Leonardo Bras" <leobras@redhat.com>
Subject: Re: [PATCH v4 04/23] migration: Remove masking for compression
Date: Tue, 11 Jan 2022 19:56:16 +0000 [thread overview]
Message-ID: <Yd3g4FOe+IzujP/V@work-vm> (raw)
In-Reply-To: <20220111130024.5392-5-quintela@redhat.com>
* Juan Quintela (quintela@redhat.com) wrote:
> Remove the mask in the call to ram_release_pages(). Nothing else does
> it, and if the offset has that bits set, we have a lot of trouble.
>
> Signed-off-by: Juan Quintela <quintela@redhat.com>
Yeh same as in the other branch
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> ---
> migration/ram.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/migration/ram.c b/migration/ram.c
> index 881fe4974e..fa49d22e69 100644
> --- a/migration/ram.c
> +++ b/migration/ram.c
> @@ -1340,7 +1340,7 @@ static bool do_compress_ram_page(QEMUFile *f, z_stream *stream, RAMBlock *block,
> ram_addr_t offset, uint8_t *source_buf)
> {
> RAMState *rs = ram_state;
> - uint8_t *p = block->host + (offset & TARGET_PAGE_MASK);
> + uint8_t *p = block->host + offset;
> bool zero_page = false;
> int ret;
>
> @@ -1365,7 +1365,7 @@ static bool do_compress_ram_page(QEMUFile *f, z_stream *stream, RAMBlock *block,
> }
>
> exit:
> - ram_release_page(block->idstr, offset & TARGET_PAGE_MASK);
> + ram_release_page(block->idstr, offset);
> return zero_page;
> }
>
> --
> 2.34.1
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
next prev parent reply other threads:[~2022-01-11 20:28 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-11 13:00 [PATCH v4 00/23] Migration: Transmit and detect zero pages in the multifd threads Juan Quintela
2022-01-11 13:00 ` [PATCH v4 01/23] migration: All this fields are unsigned Juan Quintela
2022-01-11 13:00 ` [PATCH v4 02/23] migration: We only need last_stage in two places Juan Quintela
2022-01-11 13:00 ` [PATCH v4 03/23] migration: ram_release_pages() always receive 1 page as argument Juan Quintela
2022-01-11 13:00 ` [PATCH v4 04/23] migration: Remove masking for compression Juan Quintela
2022-01-11 19:56 ` Dr. David Alan Gilbert [this message]
2022-01-11 13:00 ` [PATCH v4 05/23] migration: simplify do_compress_ram_page Juan Quintela
2022-01-11 20:00 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 06/23] migration: Move ram_release_pages() call to save_zero_page_to_file() Juan Quintela
2022-01-11 13:00 ` [PATCH v4 07/23] multifd: Use proper maximum compression values Juan Quintela
2022-01-13 13:27 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 08/23] multifd: Move iov from pages to params Juan Quintela
2022-01-18 17:56 ` Dr. David Alan Gilbert
2022-01-25 9:31 ` Juan Quintela
2022-01-27 15:03 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 09/23] multifd: Make zlib use iov's Juan Quintela
2022-01-11 13:00 ` [PATCH v4 10/23] multifd: Make zstd " Juan Quintela
2022-01-11 13:00 ` [PATCH v4 11/23] multifd: Remove send_write() method Juan Quintela
2022-01-18 18:22 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 12/23] multifd: Use a single writev on the send side Juan Quintela
2022-01-11 13:00 ` [PATCH v4 13/23] multifd: Unfold "used" variable by its value Juan Quintela
2022-01-11 13:00 ` [PATCH v4 14/23] multifd: Use normal pages array on the send side Juan Quintela
2022-01-18 18:41 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 15/23] multifd: Use normal pages array on the recv side Juan Quintela
2022-01-18 19:29 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 16/23] multifd: recv side only needs the RAMBlock host address Juan Quintela
2022-01-11 13:00 ` [PATCH v4 17/23] multifd: Rename pages_used to normal_pages Juan Quintela
2022-01-11 13:00 ` [PATCH v4 18/23] migration: Make ram_save_target_page() a pointer Juan Quintela
2022-01-18 19:43 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 19/23] multifd: Add property to enable/disable zero_page Juan Quintela
2022-01-18 19:38 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 20/23] multifd: Support for zero pages transmission Juan Quintela
2022-01-18 19:49 ` Dr. David Alan Gilbert
2022-01-11 13:00 ` [PATCH v4 21/23] multifd: Zero " Juan Quintela
2022-01-18 19:55 ` Dr. David Alan Gilbert
2022-01-25 9:42 ` Juan Quintela
2022-01-27 15:13 ` Dr. David Alan Gilbert
2022-01-27 15:26 ` Juan Quintela
2022-01-11 13:00 ` [PATCH v4 22/23] migration: Use multifd before we check for the zero page Juan Quintela
2022-01-18 20:01 ` Dr. David Alan Gilbert
2022-01-25 9:45 ` Juan Quintela
2022-01-11 13:00 ` [PATCH v4 23/23] migration: Export ram_release_page() Juan Quintela
2022-01-18 20:02 ` Dr. David Alan Gilbert
2022-01-25 10:02 ` Juan Quintela
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