diff options
| author | Anton Blanchard <anton@samba.org> | 2011-11-30 00:23:15 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-12-08 14:02:23 +1100 |
| commit | 90e8f57cf873188bc5cff445059ddeb72dc51d8c (patch) | |
| tree | 8c7ec8045bbb3549f35fcaf608c8542a7d7f2d2a /arch/powerpc/sysdev | |
| parent | a934904d8ac2411ca329fc50daa29ab35a8f198b (diff) | |
| download | blackbird-op-linux-90e8f57cf873188bc5cff445059ddeb72dc51d8c.tar.gz blackbird-op-linux-90e8f57cf873188bc5cff445059ddeb72dc51d8c.zip | |
powerpc/xics: Reset the CPPR if H_EOI fails
I have an intermittent kdump fail where the hypervisor fails an H_EOI.
As a result our CPPR is never reset to 0xff and we no longer accept
interrupts.
This patch calls icp_hv_set_cppr to reset the CPPR if H_EOI fails,
fixing the kdump fail.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/xics/icp-hv.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/powerpc/sysdev/xics/icp-hv.c b/arch/powerpc/sysdev/xics/icp-hv.c index 784b3fc6f071..253dce98c16e 100644 --- a/arch/powerpc/sysdev/xics/icp-hv.c +++ b/arch/powerpc/sysdev/xics/icp-hv.c @@ -41,23 +41,24 @@ static inline unsigned int icp_hv_get_xirr(unsigned char cppr) return ret; } -static inline void icp_hv_set_xirr(unsigned int value) +static inline void icp_hv_set_cppr(u8 value) { - long rc = plpar_hcall_norets(H_EOI, value); + long rc = plpar_hcall_norets(H_CPPR, value); if (rc != H_SUCCESS) { - pr_err("%s: bad return code eoi xirr=0x%x returned %ld\n", + pr_err("%s: bad return code cppr cppr=0x%x returned %ld\n", __func__, value, rc); WARN_ON_ONCE(1); } } -static inline void icp_hv_set_cppr(u8 value) +static inline void icp_hv_set_xirr(unsigned int value) { - long rc = plpar_hcall_norets(H_CPPR, value); + long rc = plpar_hcall_norets(H_EOI, value); if (rc != H_SUCCESS) { - pr_err("%s: bad return code cppr cppr=0x%x returned %ld\n", + pr_err("%s: bad return code eoi xirr=0x%x returned %ld\n", __func__, value, rc); WARN_ON_ONCE(1); + icp_hv_set_cppr(value >> 24); } } |
