sysfs: read address bits from sysfs file #1966
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If setarch is running as 32bit userspace on a 64bit kernel we should use the kernel personality.
intel-lab-lkp
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Dec 21, 2022
This can be used by userspace to determine the address size of the running kernel. It frees userspace from having to interpret this information from the UTS machine field. Userspace implementation: util-linux/util-linux#1966 Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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This can be used by userspace to determine the address size of the running kernel. It frees userspace from having to interpret this information from the UTS machine field. Userspace implementation: util-linux/util-linux#1966 Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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This was only a draft PR. The kernel implementation has not been merged yet. (Or even reviewed) |
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The kernel part for this has been picked up by Greg in https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git/commit/?h=driver-core-next&id=00142bfd5a916a0b3899cc709bf8f5042cf3d084 It should make it into Linux 6.3. |
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Jan 23, 2023
This can be used by userspace to determine the address size of the running kernel. It frees userspace from having to interpret this information from the UTS machine field. Userspace implementation: util-linux/util-linux#1966 Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20221221-address-bits-v1-1-8446b13244ac@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Kernel implementation: https://lore.kernel.org/lkml/20221221-address-bits-v1-1-8446b13244ac@weissschuh.net/