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authorLinus Torvalds <torvalds@linux-foundation.org>2020-01-28 11:08:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-01-28 11:08:13 -0800
commitbcc8aff6af53907ecb60e5aa8b34fbd429408a7a (patch)
tree231702d19f95958814e0a7375b9ef7dfd10a9c97 /arch/x86/boot/compressed/head_32.S
parent435dd727a411004d9402ad0c868c958408271a48 (diff)
parent183ef7adf4ed638ac0fb0c3c9a71fc00e8512b61 (diff)
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar: "Misc updates: - Remove last remaining calls to exception_enter/exception_exit() and simplify the entry code some more. - Remove force_iret() - Add support for "Fast Short Rep Mov", which is available starting with Ice Lake Intel CPUs - and make the x86 assembly version of memmove() use REP MOV for all sizes when FSRM is available. - Micro-optimize/simplify the 32-bit boot code a bit. - Use a more future-proof SYSRET instruction mnemonic" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/boot: Simplify calculation of output address x86/entry/64: Add instruction suffix to SYSRET x86: Remove force_iret() x86/cpufeatures: Add support for fast short REP; MOVSB x86/context-tracking: Remove exception_enter/exit() from KVM_PV_REASON_PAGE_NOT_PRESENT async page fault x86/context-tracking: Remove exception_enter/exit() from do_page_fault()
Diffstat (limited to 'arch/x86/boot/compressed/head_32.S')
-rw-r--r--arch/x86/boot/compressed/head_32.S8
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index e43ac17cb9fb..73f17d0544dd 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -189,11 +189,9 @@ SYM_FUNC_START_LOCAL_NOALIGN(.Lrelocated)
/* push arguments for extract_kernel: */
pushl $z_output_len /* decompressed length, end of relocs */
- movl BP_init_size(%esi), %eax
- subl $_end, %eax
- movl %ebx, %ebp
- subl %eax, %ebp
- pushl %ebp /* output address */
+ leal _end(%ebx), %eax
+ subl BP_init_size(%esi), %eax
+ pushl %eax /* output address */
pushl $z_input_len /* input_len */
leal input_data(%ebx), %eax

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