commit 44222b7dfc55685fd4b7bf9ed1159d4b52a700ee
author Marcin Szkudlinski <marcin.szkudlinski@intel.com> Tue Jan 31 18:24:49 2023 +0100
committer Stephanos Ioannidis <root@stephanos.io> Fri Feb 03 20:59:08 2023 +0900
tree 653def40dd93d76ed2275b2d04e6319f7a8d4367
parent f00da4b0d44038cc5a2426e3ff6e1cbdea32a692

mtl: bugfix: tlb driver should allow remapping all unused pages

UNUSED_L2_START_ALIGNED is a marker of first page not used by the
linker. Starting from this page, the memory may be re-mapped.
assertion <= is banning remapping of the first unused page
changing to <

Signed-off-by: Marcin Szkudlinski <marcin.szkudlinski@intel.com>

drivers/mm/mm_drv_intel_adsp_mtl_tlb.c

diff --git a/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c b/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
index 0738470..f090c34 100644
--- a/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
+++ b/drivers/mm/mm_drv_intel_adsp_mtl_tlb.c
@@ -190,7 +190,7 @@
 	}
 
 	/* Check bounds of virtual address space */
-	CHECKIF((va <= UNUSED_L2_START_ALIGNED) ||
+	CHECKIF((va < UNUSED_L2_START_ALIGNED) ||
 		(va >= (CONFIG_KERNEL_VM_BASE + CONFIG_KERNEL_VM_SIZE))) {
 		ret = -EINVAL;
 		goto out;
@@ -336,7 +336,7 @@
 	uintptr_t va = POINTER_TO_UINT(z_soc_cached_ptr(virt));
 
 	/* Check bounds of virtual address space */
-	CHECKIF((va <= UNUSED_L2_START_ALIGNED) ||
+	CHECKIF((va < UNUSED_L2_START_ALIGNED) ||
 		(va >= (CONFIG_KERNEL_VM_BASE + CONFIG_KERNEL_VM_SIZE))) {
 		ret = -EINVAL;
 		goto out;