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| author | Michael Bestas <mkbestas@lineageos.org> | 2021-05-31 03:09:03 +0300 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2021-05-31 03:09:03 +0300 |
| commit | 0ce166e3c4e576ae072d950006a937931df8ca3c (patch) | |
| tree | 87428d6651cc3cd42c586331c67590f3a9e2c578 /arch/powerpc/lib/feature-fixups.c | |
| parent | a4940e8fb458a45644126d132c2d5b74719df8df (diff) | |
| parent | 3628cdd31199df6519ecad709f5cc8be9401f93e (diff) | |
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998
This brings LA.UM.9.2.r1-03300-SDMxx0.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
3628cdd31199d Merge 4.4.270 into android-4.4-p
Conflicts:
drivers/mmc/core/core.c
drivers/usb/core/hub.c
kernel/trace/trace.c
Change-Id: I6b81471122341f9769ce9c65cbd0fedd5e908b38
Diffstat (limited to 'arch/powerpc/lib/feature-fixups.c')
| -rw-r--r-- | arch/powerpc/lib/feature-fixups.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index 40b134bf5a68..b5dc2a03ea93 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -16,6 +16,7 @@ #include <linux/kernel.h> #include <linux/string.h> #include <linux/init.h> +#include <linux/stop_machine.h> #include <asm/cputable.h> #include <asm/code-patching.h> #include <asm/page.h> @@ -279,8 +280,9 @@ void do_uaccess_flush_fixups(enum l1d_flush_type types) : "unknown"); } -void do_entry_flush_fixups(enum l1d_flush_type types) +static int __do_entry_flush_fixups(void *data) { + enum l1d_flush_type types = *(enum l1d_flush_type *)data; unsigned int instrs[3], *dest; long *start, *end; int i; @@ -331,6 +333,19 @@ void do_entry_flush_fixups(enum l1d_flush_type types) : "ori type" : (types & L1D_FLUSH_MTTRIG) ? "mttrig type" : "unknown"); + + return 0; +} + +void do_entry_flush_fixups(enum l1d_flush_type types) +{ + /* + * The call to the fallback flush can not be safely patched in/out while + * other CPUs are executing it. So call __do_entry_flush_fixups() on one + * CPU while all other CPUs spin in the stop machine core with interrupts + * hard disabled. + */ + stop_machine(__do_entry_flush_fixups, &types, NULL); } void do_rfi_flush_fixups(enum l1d_flush_type types) |