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linux: adjust last_lba for m2

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This commit is contained in:
Andy Nguyen
2026-04-26 12:37:42 +02:00
parent 084a324589
commit d7533e09ed
1 changed files with 20 additions and 5 deletions
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25
linux.patch
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@@ -348,19 +348,34 @@ index 000000000000..731fed163a83
+ legacy_pic = &null_legacy_pic;
+}
diff --git a/block/partitions/efi.c b/block/partitions/efi.c
index 75474fb3848e..ff38f20bddc2 100644
index 75474fb3848e..38acd29520e5 100644
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -90,6 +90,8 @@
@@ -90,6 +90,9 @@
#include "check.h"
#include "efi.h"
+#define PS5_M2_PART44_LBA_OFFSET 34224
+#define PS5_M2_MBR_LBA 65536
+
/* This allows a kernel command line option 'gpt' to override
* the test for invalid PMBR. Not __initdata because reloading
* the partition tables happens after init too.
@@ -143,8 +145,14 @@ static inline int pmbr_part_valid(gpt_mbr_record *part)
@@ -133,8 +136,13 @@ efi_crc32(const void *buf, unsigned long len)
*/
static u64 last_lba(struct gendisk *disk)
{
+#ifdef CONFIG_X86_PS5
+ return div_u64(bdev_nr_bytes(disk->part0),
+ queue_logical_block_size(disk->queue)) - 1ULL - PS5_M2_PART44_LBA_OFFSET;
+#else
return div_u64(bdev_nr_bytes(disk->part0),
queue_logical_block_size(disk->queue)) - 1ULL;
+#endif
}
static inline int pmbr_part_valid(gpt_mbr_record *part)
@@ -143,8 +151,14 @@ static inline int pmbr_part_valid(gpt_mbr_record *part)
goto invalid;
/* set to 0x00000001 (i.e., the LBA of the GPT Partition Header) */
@@ -375,7 +390,7 @@ index 75474fb3848e..ff38f20bddc2 100644
return GPT_MBR_PROTECTIVE;
invalid:
@@ -599,6 +607,11 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
@@ -599,6 +613,11 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
if (!legacymbr)
goto fail;
@@ -387,7 +402,7 @@ index 75474fb3848e..ff38f20bddc2 100644
read_lba(state, 0, (u8 *)legacymbr, sizeof(*legacymbr));
good_pmbr = is_pmbr_valid(legacymbr, total_sectors);
kfree(legacymbr);
@@ -611,6 +624,12 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
@@ -611,6 +630,12 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
"protective" : "hybrid");
}