Re: [PATCH] PowerPC: kernel: compiling issue, make additional room in exception vector area

[Mike Qiu]

于 2013/4/25 16:21, Chen Gang 写道:

Hello Mike:

Please try this patch, at least it can pass compiling with the config
file which you provided under my cross-compiling envrionments.

I do not give a running test now, so better to try to run the new kernel
with this patch.

OK, I will use your patch, and I will send out the result later.

Thanks

Mike

Thanks.

On 2013年04月25日 16:18, Chen Gang wrote:

When CONFIG_KVM_BOOK3S_64_PR is enabled,
MASKABLE_EXCEPTION_PSERIES(0x900 ...) will includes __KVMTEST, it will
exceed 0x980 which STD_EXCEPTION_HV(0x980 ...) will use, it will cause
compiling issue.

The related errors:
arch/powerpc/kernel/exceptions-64s.S: Assembler messages:
arch/powerpc/kernel/exceptions-64s.S:258: Error: attempt to move .org backwards
make[1]: *** [arch/powerpc/kernel/head_64.o] Error 1


Signed-off-by: Chen Gang <gang.c...@asianux.com>
---
  arch/powerpc/include/asm/kvm_asm.h   |    2 +-
  arch/powerpc/kernel/exceptions-64s.S |    6 +++---
  2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/include/asm/kvm_asm.h 
b/arch/powerpc/include/asm/kvm_asm.h
index b9dd382..2c65bae 100644
--- a/arch/powerpc/include/asm/kvm_asm.h
+++ b/arch/powerpc/include/asm/kvm_asm.h
@@ -86,7 +86,7 @@
  #define BOOK3S_INTERRUPT_PROGRAM      0x700
  #define BOOK3S_INTERRUPT_FP_UNAVAIL   0x800
  #define BOOK3S_INTERRUPT_DECREMENTER  0x900
-#define BOOK3S_INTERRUPT_HV_DECREMENTER        0x980
+#define BOOK3S_INTERRUPT_HV_DECREMENTER        0x988
  #define BOOK3S_INTERRUPT_SYSCALL      0xc00
  #define BOOK3S_INTERRUPT_TRACE                0xd00
  #define BOOK3S_INTERRUPT_H_DATA_STORAGE       0xe00
diff --git a/arch/powerpc/kernel/exceptions-64s.S 
b/arch/powerpc/kernel/exceptions-64s.S
index e789ee7..bb0e677 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -255,7 +255,7 @@ hardware_interrupt_hv:
        KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x800)

MASKABLE_EXCEPTION_PSERIES(0x900, 0x900, decrementer)

-       STD_EXCEPTION_HV(0x980, 0x982, hdecrementer)
+       STD_EXCEPTION_HV(0x988, 0x982, hdecrementer)

MASKABLE_EXCEPTION_PSERIES(0xa00, 0xa00, doorbell_super)

        KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xa00)
@@ -698,7 +698,7 @@ machine_check_common:

STD_EXCEPTION_COMMON_ASYNC(0x500, hardware_interrupt, do_IRQ)

        STD_EXCEPTION_COMMON_ASYNC(0x900, decrementer, .timer_interrupt)
-       STD_EXCEPTION_COMMON(0x980, hdecrementer, .hdec_interrupt)
+       STD_EXCEPTION_COMMON(0x988, hdecrementer, .hdec_interrupt)
  #ifdef CONFIG_PPC_DOORBELL
        STD_EXCEPTION_COMMON_ASYNC(0xa00, doorbell_super, .doorbell_exception)
  #else
@@ -802,7 +802,7 @@ hardware_interrupt_relon_hv:
        STD_RELON_EXCEPTION_PSERIES(0x4700, 0x700, program_check)
        STD_RELON_EXCEPTION_PSERIES(0x4800, 0x800, fp_unavailable)
        MASKABLE_RELON_EXCEPTION_PSERIES(0x4900, 0x900, decrementer)
-       STD_RELON_EXCEPTION_HV(0x4980, 0x982, hdecrementer)
+       STD_RELON_EXCEPTION_HV(0x4988, 0x982, hdecrementer)
        MASKABLE_RELON_EXCEPTION_PSERIES(0x4a00, 0xa00, doorbell_super)
        STD_RELON_EXCEPTION_PSERIES(0x4b00, 0xb00, trap_0b)

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