OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/ppc: Factor out 4xx ppcemb_tlb_t flushing

Browse Source 
Flushing the TCG TLB pages that cache a software TLB is a common
operation, factor it into its own function.

Tested-by: BALATON Zoltan <balaton@eik.bme.hu>
Acked-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Nicholas Piggin 2023-11-13 22:04:06 +10:00
parent e8fe14112b
commit c191ad7793
1 changed files with 13 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
target/ppc/mmu_helper.c
View File

@ -749,12 +749,20 @@ target_ulong helper_4xx_tlbre_lo(CPUPPCState *env, target_ulong entry)
return ret;
}
static void ppcemb_tlb_flush(CPUState *cs, ppcemb_tlb_t *tlb)
{
target_ulong ea;
for (ea = tlb->EPN; ea < tlb->EPN + tlb->size; ea += TARGET_PAGE_SIZE) {
tlb_flush_page(cs, ea);
}
}
void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
target_ulong val)
{
CPUState *cs = env_cpu(env);
ppcemb_tlb_t *tlb;
target_ulong page, end;
qemu_log_mask(CPU_LOG_MMU, "%s entry %d val " TARGET_FMT_lx "\n",
__func__, (int)entry,
@ -763,13 +771,10 @@ void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
tlb = &env->tlb.tlbe[entry];
/* Invalidate previous TLB (if it's valid) */
if (tlb->prot & PAGE_VALID) {
end = tlb->EPN + tlb->size;
qemu_log_mask(CPU_LOG_MMU, "%s: invalidate old TLB %d start "
TARGET_FMT_lx " end " TARGET_FMT_lx "\n", __func__,
(int)entry, tlb->EPN, end);
for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
tlb_flush_page(cs, page);
}
(int)entry, tlb->EPN, tlb->EPN + tlb->size);
ppcemb_tlb_flush(cs, tlb);
}
tlb->size = booke_tlb_to_page_size((val >> PPC4XX_TLBHI_SIZE_SHIFT)
& PPC4XX_TLBHI_SIZE_MASK);
@ -805,13 +810,10 @@ void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
/* Invalidate new TLB (if valid) */
if (tlb->prot & PAGE_VALID) {
end = tlb->EPN + tlb->size;
qemu_log_mask(CPU_LOG_MMU, "%s: invalidate TLB %d start "
TARGET_FMT_lx " end " TARGET_FMT_lx "\n", __func__,
(int)entry, tlb->EPN, end);
for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
tlb_flush_page(cs, page);
}
(int)entry, tlb->EPN, tlb->EPN + tlb->size);
ppcemb_tlb_flush(cs, tlb);
}
}