diff options
| author | Alexei Starovoitov <ast@kernel.org> | 2026-05-25 06:33:15 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-05-25 06:33:30 -0700 |
| commit | eb19eead368bb0f0ef06a4125d03ed661cd23d36 (patch) | |
| tree | c831fe5940f705d97ee4ff8a33b14fe8ef013f31 /kernel/dma/debug.c | |
| parent | b1fcdf9aa9f562d0768f59ae178ed4e67fd7f370 (diff) | |
| parent | e7ae89a0c97ce2b68b0983cd01eda67cf373517d (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.1-rc5
Cross-merge BPF and other fixes after downstream PR.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/dma/debug.c')
| -rw-r--r-- | kernel/dma/debug.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index 1a725edbbbf6..3248f8b4d096 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -1251,7 +1251,14 @@ void debug_dma_map_phys(struct device *dev, phys_addr_t phys, size_t size, entry->direction = direction; entry->map_err_type = MAP_ERR_NOT_CHECKED; - if (!(attrs & DMA_ATTR_MMIO)) { + if (attrs & DMA_ATTR_MMIO) { + unsigned long pfn = PHYS_PFN(phys); + + if (pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) + err_printk(dev, entry, + "dma_map_resource called for RAM address %pa\n", + &phys); + } else { check_for_stack(dev, phys); if (!PhysHighMem(phys)) |