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target/ppc: Flush the TLB locally when the LPIDR is written

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Our TCG TLB only tags whether it's a HV vs a guest access, so it must
be flushed when the LPIDR is changed.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190215170029.15641-10-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2019-02-15 18:00:26 +01:00 • committed by David Gibson
parent 74c4912f09
commit c4dae9cd37
3 changed files with 22 additions and 1 deletions
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15
target/ppc/misc_helper.c
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@ -117,6 +117,21 @@ void helper_store_pidr(CPUPPCState *env, target_ulong val)
tlb_flush(CPU(cpu));
}
void helper_store_lpidr(CPUPPCState *env, target_ulong val)
{
PowerPCCPU *cpu = ppc_env_get_cpu(env);
env->spr[SPR_LPIDR] = val;
/*
* We need to flush the TLB on LPID changes as we only tag HV vs
* guest in TCG TLB. Also the quadrants means the HV will
* potentially access and cache entries for the current LPID as
* well.
*/
tlb_flush(CPU(cpu));
}
void helper_store_hid0_601(CPUPPCState *env, target_ulong val)
{
target_ulong hid0;