diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/efi/efi-init.c | 29 | ||||
| -rw-r--r-- | drivers/video/fbdev/core/fbcon.c | 9 |
2 files changed, 26 insertions, 12 deletions
diff --git a/drivers/firmware/efi/efi-init.c b/drivers/firmware/efi/efi-init.c index a00e07b853f2..a65c2d5b9e7b 100644 --- a/drivers/firmware/efi/efi-init.c +++ b/drivers/firmware/efi/efi-init.c @@ -12,6 +12,7 @@ #include <linux/efi.h> #include <linux/fwnode.h> #include <linux/init.h> +#include <linux/kexec_handover.h> #include <linux/memblock.h> #include <linux/mm_types.h> #include <linux/of.h> @@ -164,12 +165,32 @@ static __init void reserve_regions(void) pr_info("Processing EFI memory map:\n"); /* - * Discard memblocks discovered so far: if there are any at this - * point, they originate from memory nodes in the DT, and UEFI - * uses its own memory map instead. + * Discard memblocks discovered so far except for KHO scratch + * regions. Most memblocks at this point originate from memory nodes + * in the DT and UEFI uses its own memory map instead. However, if + * KHO is enabled, scratch regions, which are good known memory + * must be preserved. */ memblock_dump_all(); - memblock_remove(0, PHYS_ADDR_MAX); + + if (is_kho_boot()) { + struct memblock_region *r; + + /* Remove all non-KHO regions */ + for_each_mem_region(r) { + if (!memblock_is_kho_scratch(r)) { + memblock_remove(r->base, r->size); + r--; + } + } + } else { + /* + * KHO is disabled. Discard memblocks discovered so far: + * if there are any at this point, they originate from memory + * nodes in the DT, and UEFI uses its own memory map instead. + */ + memblock_remove(0, PHYS_ADDR_MAX); + } for_each_efi_memory_desc(md) { paddr = md->phys_addr; diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index 5940e2eb9231..96cc9b389246 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -279,14 +279,7 @@ static int fbcon_get_rotate(struct fb_info *info) static bool fbcon_skip_panic(struct fb_info *info) { -/* panic_cpu is not exported, and can't be used if built as module. Use - * oops_in_progress instead, but non-fatal oops won't be printed. - */ -#if defined(MODULE) - return (info->skip_panic && unlikely(oops_in_progress)); -#else - return (info->skip_panic && unlikely(atomic_read(&panic_cpu) != PANIC_CPU_INVALID)); -#endif + return (info->skip_panic && unlikely(panic_in_progress())); } static inline bool fbcon_is_active(struct vc_data *vc, struct fb_info *info) |