Marco Casaroli ce59fb6e71 xtensa/esp32s3: Reach a page pool page through a scratch mapping. ... The page pool is carved out of the PSRAM that user processes run from, and the external memory permissions are indexed by physical address, so a permanent kernel window onto the pool is a window onto every process, which no permission setting can close. Stop mapping the pool. The kernel reaches a pool page through a small scratch region instead, mapped for one operation and invalidated afterwards. esp32s3_pgmap() takes a slot, esp32s3_pgunmap() releases it, and ARCH_KMAP_VBASE and ARCH_KMAP_NPAGES describe the region. Two slots are enough, because the deepest user is up_addrenv_fork(), which holds a source and a destination page at once. Assisted-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>		2026-09-26 11:13:57 -03:00
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include	xtensa/espressif: Update common-source integration for Xtensa devices	2026-03-29 00:33:11 +08:00
kernel	protect: move us_heap to userspace_data_s	2026-02-02 11:06:53 +08:00
scripts	xtensa/esp32s3: Reach a page pool page through a scratch mapping.	2026-09-26 11:13:57 -03:00
src	boards/esp32s3: the LSM6DS3TR-C INT1 is a level, not an edge	2026-09-22 09:21:08 -03:00
.gitignore
Kconfig	boards/xtensa: fix optional item on spiflash config	2026-03-19 17:46:28 +08:00
Makefile	xtensa/espressif: Update common-source integration for Xtensa devices	2026-03-29 00:33:11 +08:00