From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Kars de Jong <jongk@linux-m68k.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Sasha Levin <sashal@kernel.org>,
gerg@linux-m68k.org, tiwai@suse.de, ulf.hansson@linaro.org,
akpm@linux-foundation.org, anshuman.khandual@arm.com,
arnd@arndb.de, linux-m68k@lists.linux-m68k.org
Subject: [PATCH AUTOSEL 6.2 06/30] m68k: mm: Fix systems with memory at end of 32-bit address space
Date: Sun, 19 Mar 2023 20:52:31 -0400 [thread overview]
Message-ID: <20230320005258.1428043-6-sashal@kernel.org> (raw)
In-Reply-To: <20230320005258.1428043-1-sashal@kernel.org>
From: Kars de Jong <jongk@linux-m68k.org>
[ Upstream commit 0d9fad91abfd723ea5070a46d98a9f4496c93ba9 ]
The calculation of end addresses of memory chunks overflowed to 0 when
a memory chunk is located at the end of 32-bit address space.
This is the case for the HP300 architecture.
Link: https://lore.kernel.org/linux-m68k/CACz-3rhUo5pgNwdWHaPWmz+30Qo9xCg70wNxdf7o5x-6tXq8QQ@mail.gmail.com/
Signed-off-by: Kars de Jong <jongk@linux-m68k.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230223112349.26675-1-jongk@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/m68k/mm/motorola.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
index 2a375637e0077..9113012240789 100644
--- a/arch/m68k/mm/motorola.c
+++ b/arch/m68k/mm/motorola.c
@@ -437,7 +437,7 @@ void __init paging_init(void)
}
min_addr = m68k_memory[0].addr;
- max_addr = min_addr + m68k_memory[0].size;
+ max_addr = min_addr + m68k_memory[0].size - 1;
memblock_add_node(m68k_memory[0].addr, m68k_memory[0].size, 0,
MEMBLOCK_NONE);
for (i = 1; i < m68k_num_memory;) {
@@ -452,21 +452,21 @@ void __init paging_init(void)
}
memblock_add_node(m68k_memory[i].addr, m68k_memory[i].size, i,
MEMBLOCK_NONE);
- addr = m68k_memory[i].addr + m68k_memory[i].size;
+ addr = m68k_memory[i].addr + m68k_memory[i].size - 1;
if (addr > max_addr)
max_addr = addr;
i++;
}
m68k_memoffset = min_addr - PAGE_OFFSET;
- m68k_virt_to_node_shift = fls(max_addr - min_addr - 1) - 6;
+ m68k_virt_to_node_shift = fls(max_addr - min_addr) - 6;
module_fixup(NULL, __start_fixup, __stop_fixup);
flush_icache();
- high_memory = phys_to_virt(max_addr);
+ high_memory = phys_to_virt(max_addr) + 1;
min_low_pfn = availmem >> PAGE_SHIFT;
- max_pfn = max_low_pfn = max_addr >> PAGE_SHIFT;
+ max_pfn = max_low_pfn = (max_addr >> PAGE_SHIFT) + 1;
/* Reserve kernel text/data/bss and the memory allocated in head.S */
memblock_reserve(m68k_memory[0].addr, availmem - m68k_memory[0].addr);
--
2.39.2
next prev parent reply other threads:[~2023-03-20 0:53 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-20 0:52 [PATCH AUTOSEL 6.2 01/30] drm/cirrus: NULL-check pipe->plane.state->fb in cirrus_pipe_update() Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 02/30] HID: cp2112: Fix driver not registering GPIO IRQ chip as threaded Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 03/30] ca8210: fix mac_len negative array access Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 04/30] HID: logitech-hidpp: Add support for Logitech MX Master 3S mouse Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 05/30] HID: intel-ish-hid: ipc: Fix potential use-after-free in work function Sasha Levin
2023-03-20 0:52 ` Sasha Levin [this message]
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 07/30] m68k: Only force 030 bus error if PC not in exception table Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 08/30] selftests/bpf: check that modifier resolves after pointer Sasha Levin
2023-03-20 15:31 ` Lorenz Bauer
2023-03-20 15:48 ` Greg KH
2023-03-28 10:18 ` Lorenz Bauer
2023-04-11 15:08 ` Lorenz Bauer
2023-04-11 15:14 ` Greg KH
2023-05-24 11:03 ` Lorenz Bauer
2023-05-24 16:03 ` Greg KH
2023-05-24 17:04 ` Lorenz Bauer
2023-05-26 16:43 ` Greg KH
2023-05-30 11:24 ` Lorenz Bauer
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 09/30] cpumask: fix incorrect cpumask scanning result checks Sasha Levin
2023-03-20 1:59 ` Linus Torvalds
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 10/30] scsi: target: iscsi: Fix an error message in iscsi_check_key() Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 11/30] scsi: qla2xxx: Add option to disable FC2 Target support Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 12/30] scsi: hisi_sas: Check devm_add_action() return value Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 13/30] scsi: ufs: core: Add soft dependency on governor_simpleondemand Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 14/30] scsi: lpfc: Check kzalloc() in lpfc_sli4_cgn_params_read() Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 15/30] scsi: lpfc: Avoid usage of list iterator variable after loop Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 16/30] scsi: mpi3mr: ioctl timeout when disabling/enabling interrupt Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 17/30] scsi: mpi3mr: Driver unload crashes host when enhanced logging is enabled Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 18/30] scsi: mpi3mr: Wait for diagnostic save during controller init Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 19/30] scsi: mpi3mr: Return proper values for failures in firmware init path Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 20/30] scsi: mpi3mr: NVMe command size greater than 8K fails Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 21/30] scsi: mpi3mr: Bad drive in topology results kernel crash Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 22/30] scsi: storvsc: Handle BlockSize change in Hyper-V VHD/VHDX file Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 23/30] platform/x86: ISST: Increase range of valid mail box commands Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 24/30] platform/x86: int3472: Add GPIOs to Surface Go 3 Board data Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 25/30] net: usb: cdc_mbim: avoid altsetting toggling for Telit FE990 Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 26/30] net: usb: qmi_wwan: add Telit 0x1080 composition Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 27/30] drm/amd/display: Update clock table to include highest clock setting Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 28/30] sh: sanitize the flags on sigreturn Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 29/30] drm/amdgpu: Fix call trace warning and hang when removing amdgpu device Sasha Levin
2023-03-20 0:52 ` [PATCH AUTOSEL 6.2 30/30] drm/amd: Fix initialization mistake for NBIO 7.3.0 Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230320005258.1428043-6-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=anshuman.khandual@arm.com \
--cc=arnd@arndb.de \
--cc=geert@linux-m68k.org \
--cc=gerg@linux-m68k.org \
--cc=jongk@linux-m68k.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-m68k@lists.linux-m68k.org \
--cc=stable@vger.kernel.org \
--cc=tiwai@suse.de \
--cc=ulf.hansson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).