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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5a064d398f
ENTRY is intended for functions and shall be paired with ENDPROC. ENTRY also aligns symbols which creates unnecessary holes between data. So drop ENTRY from saved_eip in wakeup_32 and many saved_* in wakeup_64, as these symbols are local only. One could've used SYM_DATA_LOCAL for these symbols, but it was discouraged earlier: https://lkml.kernel.org/r/20170427124310.GC23352@amd Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: linux-arch@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20190130124711.12463-3-jslaby@suse.cz
137 lines
2.9 KiB
ArmAsm
137 lines
2.9 KiB
ArmAsm
.text
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#include <linux/linkage.h>
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#include <asm/segment.h>
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#include <asm/pgtable_types.h>
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#include <asm/page_types.h>
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#include <asm/msr.h>
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#include <asm/asm-offsets.h>
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#include <asm/frame.h>
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# Copyright 2003 Pavel Machek <pavel@suse.cz>, distribute under GPLv2
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.code64
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/*
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* Hooray, we are in Long 64-bit mode (but still running in low memory)
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*/
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ENTRY(wakeup_long64)
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movq saved_magic, %rax
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movq $0x123456789abcdef0, %rdx
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cmpq %rdx, %rax
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jne bogus_64_magic
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movw $__KERNEL_DS, %ax
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movw %ax, %ss
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movw %ax, %ds
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movw %ax, %es
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movw %ax, %fs
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movw %ax, %gs
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movq saved_rsp, %rsp
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movq saved_rbx, %rbx
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movq saved_rdi, %rdi
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movq saved_rsi, %rsi
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movq saved_rbp, %rbp
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movq saved_rip, %rax
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jmp *%rax
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ENDPROC(wakeup_long64)
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bogus_64_magic:
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jmp bogus_64_magic
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ENTRY(do_suspend_lowlevel)
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FRAME_BEGIN
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subq $8, %rsp
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xorl %eax, %eax
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call save_processor_state
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movq $saved_context, %rax
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movq %rsp, pt_regs_sp(%rax)
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movq %rbp, pt_regs_bp(%rax)
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movq %rsi, pt_regs_si(%rax)
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movq %rdi, pt_regs_di(%rax)
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movq %rbx, pt_regs_bx(%rax)
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movq %rcx, pt_regs_cx(%rax)
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movq %rdx, pt_regs_dx(%rax)
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movq %r8, pt_regs_r8(%rax)
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movq %r9, pt_regs_r9(%rax)
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movq %r10, pt_regs_r10(%rax)
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movq %r11, pt_regs_r11(%rax)
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movq %r12, pt_regs_r12(%rax)
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movq %r13, pt_regs_r13(%rax)
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movq %r14, pt_regs_r14(%rax)
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movq %r15, pt_regs_r15(%rax)
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pushfq
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popq pt_regs_flags(%rax)
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movq $.Lresume_point, saved_rip(%rip)
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movq %rsp, saved_rsp
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movq %rbp, saved_rbp
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movq %rbx, saved_rbx
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movq %rdi, saved_rdi
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movq %rsi, saved_rsi
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addq $8, %rsp
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movl $3, %edi
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xorl %eax, %eax
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call x86_acpi_enter_sleep_state
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/* in case something went wrong, restore the machine status and go on */
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jmp .Lresume_point
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.align 4
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.Lresume_point:
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/* We don't restore %rax, it must be 0 anyway */
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movq $saved_context, %rax
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movq saved_context_cr4(%rax), %rbx
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movq %rbx, %cr4
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movq saved_context_cr3(%rax), %rbx
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movq %rbx, %cr3
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movq saved_context_cr2(%rax), %rbx
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movq %rbx, %cr2
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movq saved_context_cr0(%rax), %rbx
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movq %rbx, %cr0
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pushq pt_regs_flags(%rax)
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popfq
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movq pt_regs_sp(%rax), %rsp
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movq pt_regs_bp(%rax), %rbp
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movq pt_regs_si(%rax), %rsi
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movq pt_regs_di(%rax), %rdi
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movq pt_regs_bx(%rax), %rbx
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movq pt_regs_cx(%rax), %rcx
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movq pt_regs_dx(%rax), %rdx
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movq pt_regs_r8(%rax), %r8
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movq pt_regs_r9(%rax), %r9
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movq pt_regs_r10(%rax), %r10
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movq pt_regs_r11(%rax), %r11
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movq pt_regs_r12(%rax), %r12
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movq pt_regs_r13(%rax), %r13
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movq pt_regs_r14(%rax), %r14
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movq pt_regs_r15(%rax), %r15
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#ifdef CONFIG_KASAN
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/*
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* The suspend path may have poisoned some areas deeper in the stack,
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* which we now need to unpoison.
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*/
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movq %rsp, %rdi
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call kasan_unpoison_task_stack_below
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#endif
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xorl %eax, %eax
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addq $8, %rsp
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FRAME_END
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jmp restore_processor_state
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ENDPROC(do_suspend_lowlevel)
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.data
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saved_rbp: .quad 0
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saved_rsi: .quad 0
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saved_rdi: .quad 0
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saved_rbx: .quad 0
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saved_rip: .quad 0
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saved_rsp: .quad 0
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ENTRY(saved_magic) .quad 0
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