From: ValdikSS via Grub-devel <grub-devel@gnu.org>
To: grub-devel@gnu.org
Cc: ValdikSS <iam@valdikss.org.ru>
Subject: [PATCH v2 0/2] disk: use maximum number of sectors for LBA
Date: Fri, 6 Oct 2023 20:10:11 +0300 [thread overview]
Message-ID: <20231006171142.14846-1-iam@valdikss.org.ru> (raw)
GRUB2 limits number of sectors read at once in LBA mode to the
number reported in CHS disk geometry by BIOS.
This is unnecessary, as IBM/MS INT13 Extensions does not have
such limit and it is safe to read up to 127 sectors in a single call.
This fixes greatly increased boot times on WYSE C10LE x86 thin
client with Phoenix bios.
See: https://lore.kernel.org/grub-devel/d42a11fa-2a59-b5e7-08b1-d2c60444bb99@valdikss.org.ru/
ValdikSS (2):
disk: read up to 63 sectors in LBA mode
disk: increase sector size up to 127 for LBA reads
grub-core/disk/i386/pc/biosdisk.c | 5 ++++-
include/grub/disk.h | 7 +++++--
2 files changed, 9 insertions(+), 3 deletions(-)
--
2.41.0
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next reply other threads:[~2023-10-06 17:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-06 17:10 ValdikSS via Grub-devel [this message]
2023-10-06 17:10 ` [PATCH v2 1/2] disk: read up to 63 sectors in LBA mode ValdikSS via Grub-devel
2023-10-06 17:10 ` [PATCH v2 2/2] disk: increase sector size up to 127 for LBA reads ValdikSS via Grub-devel
2023-10-06 18:21 ` Glenn Washburn
2023-10-06 20:32 ` ValdikSS via Grub-devel
2023-10-06 20:54 ` Vladimir 'phcoder' Serbinenko
2023-10-10 1:32 ` ValdikSS via Grub-devel
2023-10-09 15:08 ` [PATCH v2 0/2] disk: use maximum number of sectors for LBA Daniel Kiper
2023-10-10 11:34 ` Daniel Kiper
2023-10-10 18:30 ` ValdikSS via Grub-devel
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