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[v1,3/3] efi/efistub: Make libstub to supply boot_param from RDI

Message ID 20250623081656.1303-1-khaliidcaliy@gmail.com
State New
Headers show
Series None | expand

Commit Message

Khalid Ali June 23, 2025, 8:16 a.m. UTC 
From: Khalid Ali <khaliidcaliy@gmail.com>

This adjusts the libstub to supply argument from RDI instead of RSI.

Signed-off-by: Khalid Ali <khaliidcaliy@gmail.com>
---
 drivers/firmware/efi/libstub/x86-stub.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c
index 09ed1c122106..9da9b6295b1d 100644
--- a/drivers/firmware/efi/libstub/x86-stub.c
+++ b/drivers/firmware/efi/libstub/x86-stub.c
@@ -794,8 +794,8 @@  static efi_status_t efi_decompress_kernel(unsigned long *kernel_entry,
 static void __noreturn enter_kernel(unsigned long kernel_addr,
 				    struct boot_params *boot_params)
 {
-	/* enter decompressed kernel with boot_params pointer in RSI/ESI */
-	asm("jmp *%0"::"r"(kernel_addr), "S"(boot_params));
+	/* enter decompressed kernel with boot_params pointer in RDI/EDI */
+	asm("jmp *%0"::"r"(kernel_addr), "D"(boot_params));
 
 	unreachable();
 }