[PATCH] kernel/5.10: allocate last level PTEs in high memory

[Rui Salvaterra]

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 at gmail.com>
---

5.4 deemed unworthy, since it's going the way of the dodo. :)

 target/linux/bcm53xx/config-5.10         | 2 +-
 target/linux/ipq40xx/config-5.10         | 2 +-
 target/linux/ipq806x/config-5.10         | 2 +-
 target/linux/mediatek/mt7623/config-5.10 | 2 +-
 target/linux/mvebu/config-5.10           | 2 +-
 target/linux/x86/config-5.10             | 2 +-
 target/linux/zynq/config-5.10            | 2 +-
 7 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/target/linux/bcm53xx/config-5.10 b/target/linux/bcm53xx/config-5.10
index 3dd0359113..6049641898 100644
--- a/target/linux/bcm53xx/config-5.10
+++ b/target/linux/bcm53xx/config-5.10
@@ -159,7 +159,7 @@ CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT_MAP=y
 CONFIG_HAVE_SMP=y
 CONFIG_HIGHMEM=y
-# CONFIG_HIGHPTE is not set
+CONFIG_HIGHPTE=y
 CONFIG_HW_RANDOM=y
 CONFIG_HW_RANDOM_BCM2835=y
 CONFIG_HZ_FIXED=0
diff --git a/target/linux/ipq40xx/config-5.10 b/target/linux/ipq40xx/config-5.10
index 64f0e54d41..65dd21bf7f 100644
--- a/target/linux/ipq40xx/config-5.10
+++ b/target/linux/ipq40xx/config-5.10
@@ -189,7 +189,7 @@ CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT_MAP=y
 CONFIG_HAVE_SMP=y
 CONFIG_HIGHMEM=y
-# CONFIG_HIGHPTE is not set
+CONFIG_HIGHPTE=y
 CONFIG_HWSPINLOCK=y
 CONFIG_HWSPINLOCK_QCOM=y
 CONFIG_HW_RANDOM=y
diff --git a/target/linux/ipq806x/config-5.10 b/target/linux/ipq806x/config-5.10
index 35da3dd3c2..b7b062f3ec 100644
--- a/target/linux/ipq806x/config-5.10
+++ b/target/linux/ipq806x/config-5.10
@@ -177,7 +177,7 @@ CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT_MAP=y
 CONFIG_HAVE_SMP=y
 CONFIG_HIGHMEM=y
-# CONFIG_HIGHPTE is not set
+CONFIG_HIGHPTE=y
 CONFIG_HWMON=y
 CONFIG_HWSPINLOCK=y
 CONFIG_HWSPINLOCK_QCOM=y
diff --git a/target/linux/mediatek/mt7623/config-5.10 b/target/linux/mediatek/mt7623/config-5.10
index aabc3b775e..8129584ffc 100644
--- a/target/linux/mediatek/mt7623/config-5.10
+++ b/target/linux/mediatek/mt7623/config-5.10
@@ -264,7 +264,7 @@ CONFIG_HAVE_SMP=y
 CONFIG_HDMI=y
 CONFIG_HID=y
 CONFIG_HIGHMEM=y
-# CONFIG_HIGHPTE is not set
+CONFIG_HIGHPTE=y
 CONFIG_HOTPLUG_CPU=y
 CONFIG_HW_CONSOLE=y
 CONFIG_HWMON=y
diff --git a/target/linux/mvebu/config-5.10 b/target/linux/mvebu/config-5.10
index 1017ee5eed..32978a7d3c 100644
--- a/target/linux/mvebu/config-5.10
+++ b/target/linux/mvebu/config-5.10
@@ -197,7 +197,7 @@ CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT_MAP=y
 CONFIG_HAVE_SMP=y
 CONFIG_HIGHMEM=y
-# CONFIG_HIGHPTE is not set
+CONFIG_HIGHPTE=y
 CONFIG_HOTPLUG_CPU=y
 CONFIG_HWBM=y
 CONFIG_HWMON=y
diff --git a/target/linux/x86/config-5.10 b/target/linux/x86/config-5.10
index 2d07f5a905..ec27bb7945 100644
--- a/target/linux/x86/config-5.10
+++ b/target/linux/x86/config-5.10
@@ -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
diff --git a/target/linux/zynq/config-5.10 b/target/linux/zynq/config-5.10
index 35b7f03a9b..7e960d4ad0 100644
--- a/target/linux/zynq/config-5.10
+++ b/target/linux/zynq/config-5.10
@@ -225,7 +225,7 @@ CONFIG_HID=y
 CONFIG_HID_GENERIC=y
 CONFIG_HID_MICROSOFT=y
 CONFIG_HIGHMEM=y
-# CONFIG_HIGHPTE is not set
+CONFIG_HIGHPTE=y
 CONFIG_HOTPLUG_CPU=y
 CONFIG_HWMON=y
 CONFIG_HW_CONSOLE=y
-- 
2.34.1