[PATCH 5/9] accel/tcg: Add tlb_flush_page_bits_by_mmuidx_all_cpus()

[Philippe Mathieu-Daudé]

From: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210508201640.1045808-1-richard.henderson@linaro.org>
[PMD: Split from bigger patch]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/exec/exec-all.h | 13 +++++++++++++
 accel/tcg/cputlb.c      | 24 +++++++++++++++++-------
 2 files changed, 30 insertions(+), 7 deletions(-)

diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 5a5f6d4c1a8..9a3dbb7ec08 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -276,6 +276,12 @@ void tlb_flush_page_bits_by_mmuidx_all_cpus_synced
 void tlb_flush_range_by_mmuidx(CPUState *cpu, target_ulong addr,
                                target_ulong len, uint16_t idxmap,
                                unsigned bits);
+
+/* Similarly, with broadcast and syncing. */
+void tlb_flush_range_by_mmuidx_all_cpus(CPUState *cpu, target_ulong addr,
+                                        target_ulong len, uint16_t idxmap,
+                                        unsigned bits);
+
 /**
  * tlb_set_page_with_attrs:
  * @cpu: CPU to add this TLB entry for
@@ -384,6 +390,13 @@ static inline void tlb_flush_range_by_mmuidx(CPUState 
*cpu, target_ulong addr,
                                              unsigned bits)
 {
 }
+static inline void tlb_flush_range_by_mmuidx_all_cpus(CPUState *cpu,
+                                                      target_ulong addr,
+                                                      target_ulong len,
+                                                      uint16_t idxmap,
+                                                      unsigned bits)
+{
+}
 #endif
 /**
  * probe_access:
diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
index 16924ceb777..5314349ef9d 100644
--- a/accel/tcg/cputlb.c
+++ b/accel/tcg/cputlb.c
@@ -870,16 +870,18 @@ void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, 
target_ulong addr,
     tlb_flush_range_by_mmuidx(cpu, addr, TARGET_PAGE_SIZE, idxmap, bits);
 }
 
-void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *src_cpu,
-                                            target_ulong addr,
-                                            uint16_t idxmap,
-                                            unsigned bits)
+void tlb_flush_range_by_mmuidx_all_cpus(CPUState *src_cpu,
+                                        target_ulong addr, target_ulong len,
+                                        uint16_t idxmap, unsigned bits)
 {
     TLBFlushRangeData d;
     run_on_cpu_data runon;
 
-    /* If all bits are significant, this devolves to tlb_flush_page. */
-    if (bits >= TARGET_LONG_BITS) {
+    /*
+     * If all bits are significant, and len is small,
+     * this devolves to tlb_flush_page.
+     */
+    if (bits >= TARGET_LONG_BITS && len <= TARGET_PAGE_SIZE) {
         tlb_flush_page_by_mmuidx_all_cpus(src_cpu, addr, idxmap);
         return;
     }
@@ -891,7 +893,7 @@ void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState 
*src_cpu,
 
     /* This should already be page aligned */
     d.addr = addr & TARGET_PAGE_MASK;
-    d.len = TARGET_PAGE_SIZE;
+    d.len = len;
     d.idxmap = idxmap;
     d.bits = bits;
 
@@ -914,6 +916,14 @@ void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState 
*src_cpu,
     tlb_flush_page_bits_by_mmuidx_async_0(src_cpu, d);
 }
 
+void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *src_cpu,
+                                            target_ulong addr,
+                                            uint16_t idxmap, unsigned bits)
+{
+    tlb_flush_range_by_mmuidx_all_cpus(src_cpu, addr, TARGET_PAGE_SIZE,
+                                       idxmap, bits);
+}
+
 void tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *src_cpu,
                                                    target_ulong addr,
                                                    uint16_t idxmap,
-- 
2.26.3