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kernel: 5.10: allocate last level PTEs in high memory

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Enable support for allocating user space page table entries in high memory [1],
for the targets which support this feature. This saves precious low memory
(permanently mapped, the only type of memory directly accessible by the kernel).

[1] https://www.kernel.org/doc/html/latest/vm/highmem.html

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
This commit is contained in:
Rui Salvaterra
2022-01-03 13:36:36 +00:00
parent 0989b7ad3a
commit 72d2c54ccb
7 changed files with 7 additions and 7 deletions
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target/linux/x86/config-5.10
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@@ -146,7 +146,7 @@ CONFIG_HID=y
CONFIG_HIGHMEM=y
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
# CONFIG_HIGHPTE is not set
CONFIG_HIGHPTE=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_HPET_TIMER=y
# CONFIG_HP_WATCHDOG is not set