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| author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-07-23 12:08:11 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-26 16:34:19 +0300 |
| commit | 03f3e54abd95061ea11bdb4eedbe3cab6553704f (patch) | |
| tree | d02940a478fe85fb61c45ac97dfd6c7064919cfd /arch/powerpc/include | |
| parent | 6f3fe297f95134e9b2386dae0067bf530e1ddca0 (diff) | |
| download | linux-03f3e54abd95061ea11bdb4eedbe3cab6553704f.tar.xz | |
powerpc/watchpoint: Guest support for 2nd DAWR hcall
2nd DAWR can be set/unset using H_SET_MODE hcall with resource value 5.
Enable powervm guest support with that. This has no effect on kvm guest
because kvm will return error if guest does hcall with resource value 5.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200723090813.303838-9-ravi.bangoria@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/hvcall.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/machdep.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/plpar_wrappers.h | 5 |
3 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 9ab367030f4f..fbb377055471 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -358,6 +358,7 @@ #define H_SET_MODE_RESOURCE_SET_DAWR0 2 #define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE 3 #define H_SET_MODE_RESOURCE_LE 4 +#define H_SET_MODE_RESOURCE_SET_DAWR1 5 /* Values for argument to H_SIGNAL_SYS_RESET */ #define H_SIGNAL_SYS_RESET_ALL -1 diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 7bcb64444a39..a90b892f0bfe 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -131,7 +131,7 @@ struct machdep_calls { unsigned long dabrx); /* Set DAWR for this platform, leave empty for default implementation */ - int (*set_dawr)(unsigned long dawr, + int (*set_dawr)(int nr, unsigned long dawr, unsigned long dawrx); #ifdef CONFIG_PPC32 /* XXX for now */ diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h index d12c3680d946..ece84a430701 100644 --- a/arch/powerpc/include/asm/plpar_wrappers.h +++ b/arch/powerpc/include/asm/plpar_wrappers.h @@ -315,6 +315,11 @@ static inline long plpar_set_watchpoint0(unsigned long dawr0, unsigned long dawr return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR0, dawr0, dawrx0); } +static inline long plpar_set_watchpoint1(unsigned long dawr1, unsigned long dawrx1) +{ + return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR1, dawr1, dawrx1); +} + static inline long plpar_signal_sys_reset(long cpu) { return plpar_hcall_norets(H_SIGNAL_SYS_RESET, cpu); |