Messages in this thread | | | Date | Tue, 8 Nov 2022 07:35:36 -0700 | From | Nathan Chancellor <> | Subject | Re: vmlinux.lds.h: Bug report: unable to handle page fault when start the virtual machine with qemu |
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On Tue, Nov 08, 2022 at 03:46:32PM +0800, xiafukun wrote: > Thank you for your reply. > We tested your changes to this patch and did fix the issue. Following the > solution you provided, we recompile the kernel and successfully start the > virtual machine.
Thank you a lot for testing and sorry about the breakage in the first place :(
Ard, were you going to send a patch? Feel free to preemptively add:
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
if so; otherwise, I can send one later today.
> 在 2022/11/8 0:00, Ard Biesheuvel 写道: > > > > That patch looks incorrect to me. Without CONFIG_SMP, the PERCPU > > sections are not instantiated, and the only copy of those variables is > > created in the ordinary .data/.bss sections > > > > Does the change below fix the issue for you? > > > > --- a/include/asm-generic/vmlinux.lds.h > > +++ b/include/asm-generic/vmlinux.lds.h > > @@ -347,6 +347,7 @@ > > #define DATA_DATA \ > > *(.xiptext) \ > > *(DATA_MAIN) \ > > + *(.data..decrypted) \ > > *(.ref.data) \ > > *(.data..shared_aligned) /* percpu related */ \ > > MEM_KEEP(init.data*) \ > > @@ -995,7 +996,6 @@ > > #ifdef CONFIG_AMD_MEM_ENCRYPT > > #define PERCPU_DECRYPTED_SECTION \ > > . = ALIGN(PAGE_SIZE); \ > > - *(.data..decrypted) \ > > *(.data..percpu..decrypted) \ > > . = ALIGN(PAGE_SIZE); > > #else
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