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7c6dd961d0
linux/arch/x86
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Peter Zijlstra 7c6dd961d0 x86/boot: Avoid using Intel mnemonics in AT&T syntax asm 
With 'GNU assembler (GNU Binutils for Debian) 2.39.90.20221231' the
build now reports:

  arch/x86/realmode/rm/../../boot/bioscall.S: Assembler messages:
  arch/x86/realmode/rm/../../boot/bioscall.S:35: Warning: found `movsd'; assuming `movsl' was meant
  arch/x86/realmode/rm/../../boot/bioscall.S:70: Warning: found `movsd'; assuming `movsl' was meant

  arch/x86/boot/bioscall.S: Assembler messages:
  arch/x86/boot/bioscall.S:35: Warning: found `movsd'; assuming `movsl' was meant
  arch/x86/boot/bioscall.S:70: Warning: found `movsd'; assuming `movsl' was meant

Which is due to:

  PR gas/29525

  Note that with the dropped CMPSD and MOVSD Intel Syntax string insn
  templates taking operands, mixed IsString/non-IsString template groups
  (with memory operands) cannot occur anymore. With that
  maybe_adjust_templates() becomes unnecessary (and is hence being
  removed).

More details: https://sourceware.org/bugzilla/show_bug.cgi?id=29525

Borislav Petkov further explains:

  " the particular problem here is is that the 'd' suffix is
    "conflicting" in the sense that you can have SSE mnemonics like movsD %xmm...
    and the same thing also for string ops (which is the case here) so apparently
    the agreement in binutils land is to use the always accepted suffixes 'l' or 'q'
    and phase out 'd' slowly... "

Fixes: 7a734e7dd9 ("x86, setup: "glove box" BIOS calls -- infrastructure")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/Y71I3Ex2pvIxMpsP@hirez.programming.kicks-ass.net
2023-01-10 13:03:23 +01:00
..
boot x86/boot: Avoid using Intel mnemonics in AT&T syntax asm 2023-01-10 13:03:23 +01:00
coco x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type 2023-01-03 18:46:06 +01:00
configs x86/defconfig: Enable CONFIG_DEBUG_WX=y 2022-09-02 10:41:42 +02:00
crypto - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
entry - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
events perf/x86/rapl: Add support for Intel Emerald Rapids 2023-01-04 21:00:29 +01:00
hyperv x86/hyperv: Remove unregister syscore call from Hyper-V cleanup 2022-11-29 17:55:29 +00:00
ia32 x86/signal/32: Merge native and compat 32-bit signal code 2022-10-19 09:58:49 +02:00
include x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type 2023-01-03 18:46:06 +01:00
kernel x86/bugs: Flush IBP in ib_prctl_set() 2023-01-04 11:25:32 +01:00
kvm Merge branch 'kvm-late-6.1-fixes' into HEAD 2022-12-28 07:19:14 -05:00
lib x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type 2023-01-03 18:46:06 +01:00
math-emu
mm prandom: remove prandom_u32_max() 2022-12-20 03:13:45 +01:00
net - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
pci x86/PCI: Use pr_info() when possible 2022-12-10 10:33:18 -06:00
platform pci-v6.2-changes 2022-12-14 09:54:10 -08:00
power - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
purgatory x86/purgatory: disable KMSAN instrumentation 2022-10-28 13:37:23 -07:00
ras
realmode x86/boot: Skip realmode init code when running as Xen PV guest 2022-11-25 12:05:22 +01:00
tools x86/tools/relocs: Ignore __kcfi_typeid_ relocations 2022-09-26 10:13:15 -07:00
um [elf][non-regset] uninline elf_core_copy_task_fpregs() (and lose pt_regs argument) 2022-11-24 23:24:23 -05:00
video
virt/vmx/tdx
xen - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
.gitignore x86/purgatory: Omit use of bin2c 2022-07-25 10:32:32 +02:00
Kbuild
Kconfig powerpc updates for 6.2 2022-12-19 07:13:33 -06:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug arch: make TRACE_IRQFLAGS_NMI_SUPPORT generic 2022-06-23 15:39:21 +01:00
Makefile Kbuild updates for v6.2 2022-12-19 12:33:32 -06:00
Makefile_32.cpu
Makefile.um