diff options
| author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-07-23 14:38:11 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-26 23:34:19 +1000 |
| commit | 03f3e54abd95061ea11bdb4eedbe3cab6553704f (patch) | |
| tree | d02940a478fe85fb61c45ac97dfd6c7064919cfd /arch/powerpc/platforms/pseries | |
| parent | 6f3fe297f95134e9b2386dae0067bf530e1ddca0 (diff) | |
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/platforms/pseries')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 8c85466e0dd8..ba34eb23e8f5 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -833,12 +833,15 @@ static int pseries_set_xdabr(unsigned long dabr, unsigned long dabrx) return plpar_hcall_norets(H_SET_XDABR, dabr, dabrx); } -static int pseries_set_dawr(unsigned long dawr, unsigned long dawrx) +static int pseries_set_dawr(int nr, unsigned long dawr, unsigned long dawrx) { /* PAPR says we can't set HYP */ dawrx &= ~DAWRX_HYP; - return plpar_set_watchpoint0(dawr, dawrx); + if (nr == 0) + return plpar_set_watchpoint0(dawr, dawrx); + else + return plpar_set_watchpoint1(dawr, dawrx); } #define CMO_CHARACTERISTICS_TOKEN 44 |