diff options
| author | Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> | 2016-09-20 22:05:00 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-09-23 12:39:07 +1000 |
| commit | e3cffe6fad29e07d401eabb913a6d88501d5c143 (patch) | |
| tree | 1b4549c07f120cefc56dd0d420575cdef486e7d1 /target-ppc/excp_helper.c | |
| parent | a8a6d53e3626e96d5a37b9eb6dc6ce759714502e (diff) | |
target-ppc: add flag in check_tlb_flush()
We flush the qemu TLB lazily. check_tlb_flush is called whenever we hit
a context synchronizing event or instruction that requires a pending
flush to be performed.
However, we fail to handle broadcast TLB flush operations. In order to
fix that efficiently, we want to differentiate whether check_tlb_flush()
needs to only apply pending local flushes (isync instructions,
interrupts, ...) or also global pending flush operations. The latter is
only needed when executing instructions that are defined architecturally
as synchronizing global TLB flush operations. This in our case is
ptesync on BookS and tlbsync on BookE along with the paravirtualized
hypervisor calls.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
[dwg: Changed gen_check_tlb_flush() to also take a bool, and fixed
some spelling errors in commit message]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target-ppc/excp_helper.c')
| -rw-r--r-- | target-ppc/excp_helper.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c index 04ed4da1f4..921c39d33f 100644 --- a/target-ppc/excp_helper.c +++ b/target-ppc/excp_helper.c @@ -711,7 +711,7 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp) /* Any interrupt is context synchronizing, check if TCG TLB * needs a delayed flush on ppc64 */ - check_tlb_flush(env); + check_tlb_flush(env, false); } void ppc_cpu_do_interrupt(CPUState *cs) @@ -973,7 +973,7 @@ static inline void do_rfi(CPUPPCState *env, target_ulong nip, target_ulong msr) cs->interrupt_request |= CPU_INTERRUPT_EXITTB; /* Context synchronizing: check if TCG TLB needs flush */ - check_tlb_flush(env); + check_tlb_flush(env, false); } void helper_rfi(CPUPPCState *env) |