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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-07-07 05:55:07 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-08-07 08:53:59 +1000 |
| commit | b5cfc9cd7b0426e94ffd9e9ed79d1b00ace7780a (patch) | |
| tree | 2a0c709b5cc14eb7d44588b64c41a47798f66a85 /arch/powerpc/include/asm/ptrace.h | |
| parent | powerpc/32s: Fix napping restore in data storage interrupt (DSI) (diff) | |
| download | linux-dev-b5cfc9cd7b0426e94ffd9e9ed79d1b00ace7780a.tar.xz linux-dev-b5cfc9cd7b0426e94ffd9e9ed79d1b00ace7780a.zip | |
powerpc/32: Fix critical and debug interrupts on BOOKE
32 bits BOOKE have special interrupts for debug and other
critical events.
When handling those interrupts, dedicated registers are saved
in the stack frame in addition to the standard registers, leading
to a shift of the pt_regs struct.
Since commit db297c3b07af ("powerpc/32: Don't save thread.regs on
interrupt entry"), the pt_regs struct is expected to be at the
same place all the time.
Instead of handling a special struct in addition to pt_regs, just
add those special registers to struct pt_regs.
Fixes: db297c3b07af ("powerpc/32: Don't save thread.regs on interrupt entry")
Cc: stable@vger.kernel.org
Reported-by: Radu Rendec <radu.rendec@gmail.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/028d5483b4851b01ea4334d0751e7f260419092b.1625637264.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/ptrace.h')
| -rw-r--r-- | arch/powerpc/include/asm/ptrace.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h index 3e5d470a6155..14422e851494 100644 --- a/arch/powerpc/include/asm/ptrace.h +++ b/arch/powerpc/include/asm/ptrace.h @@ -70,6 +70,22 @@ struct pt_regs unsigned long __pad[4]; /* Maintain 16 byte interrupt stack alignment */ }; #endif +#if defined(CONFIG_PPC32) && defined(CONFIG_BOOKE) + struct { /* Must be a multiple of 16 bytes */ + unsigned long mas0; + unsigned long mas1; + unsigned long mas2; + unsigned long mas3; + unsigned long mas6; + unsigned long mas7; + unsigned long srr0; + unsigned long srr1; + unsigned long csrr0; + unsigned long csrr1; + unsigned long dsrr0; + unsigned long dsrr1; + }; +#endif }; #endif |