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accel/tcg: Remove {encode,decode}_pbm_to_runon 

We will not be able to fit address + length into a 64-bit packet.
Drop this optimization before re-organizing this code.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210509151618.2331764-10-f4bug@amsat.org
Message-Id: <20210508201640.1045808-1-richard.henderson@linaro.org>
[PMD: Split from bigger patch]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
[PMM: Moved patch earlier in the series]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Richard Henderson 2021-05-09 17:16:18 +02:00 committed by Peter Maydell
parent 3960a59f8d
commit d34e4d1afa
1 changed files with 20 additions and 66 deletions
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86
accel/tcg/cputlb.c
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@ -789,34 +789,6 @@ tlb_flush_page_bits_by_mmuidx_async_0(CPUState *cpu,
}
}
static bool encode_pbm_to_runon(run_on_cpu_data *out,
TLBFlushRangeData d)
{
/* We need 6 bits to hold to hold @bits up to 63. */
if (d.idxmap <= MAKE_64BIT_MASK(0, TARGET_PAGE_BITS - 6)) {
*out = RUN_ON_CPU_TARGET_PTR(d.addr | (d.idxmap << 6) | d.bits);
return true;
}
return false;
}
static TLBFlushRangeData
decode_runon_to_pbm(run_on_cpu_data data)
{
target_ulong addr_map_bits = (target_ulong) data.target_ptr;
return (TLBFlushRangeData){
.addr = addr_map_bits & TARGET_PAGE_MASK,
.idxmap = (addr_map_bits & ~TARGET_PAGE_MASK) >> 6,
.bits = addr_map_bits & 0x3f
};
}
static void tlb_flush_page_bits_by_mmuidx_async_1(CPUState *cpu,
run_on_cpu_data runon)
{
tlb_flush_page_bits_by_mmuidx_async_0(cpu, decode_runon_to_pbm(runon));
}
static void tlb_flush_page_bits_by_mmuidx_async_2(CPUState *cpu,
run_on_cpu_data data)
{
@ -829,7 +801,6 @@ void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, target_ulong addr,
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) {
@ -850,8 +821,6 @@ void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, target_ulong addr,
if (qemu_cpu_is_self(cpu)) {
tlb_flush_page_bits_by_mmuidx_async_0(cpu, d);
} else if (encode_pbm_to_runon(&runon, d)) {
async_run_on_cpu(cpu, tlb_flush_page_bits_by_mmuidx_async_1, runon);
} else {
/* Otherwise allocate a structure, freed by the worker. */
TLBFlushRangeData *p = g_memdup(&d, sizeof(d));
@ -866,7 +835,7 @@ void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *src_cpu,
unsigned bits)
{
TLBFlushRangeData d;
run_on_cpu_data runon;
CPUState *dst_cpu;
/* If all bits are significant, this devolves to tlb_flush_page. */
if (bits >= TARGET_LONG_BITS) {
@ -885,19 +854,13 @@ void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *src_cpu,
d.idxmap = idxmap;
d.bits = bits;
if (encode_pbm_to_runon(&runon, d)) {
flush_all_helper(src_cpu, tlb_flush_page_bits_by_mmuidx_async_1, runon);
} else {
CPUState *dst_cpu;
/* Allocate a separate data block for each destination cpu. */
CPU_FOREACH(dst_cpu) {
if (dst_cpu != src_cpu) {
TLBFlushRangeData *p = g_memdup(&d, sizeof(d));
async_run_on_cpu(dst_cpu,
tlb_flush_page_bits_by_mmuidx_async_2,
RUN_ON_CPU_HOST_PTR(p));
}
/* Allocate a separate data block for each destination cpu. */
CPU_FOREACH(dst_cpu) {
if (dst_cpu != src_cpu) {
TLBFlushRangeData *p = g_memdup(&d, sizeof(d));
async_run_on_cpu(dst_cpu,
tlb_flush_page_bits_by_mmuidx_async_2,
RUN_ON_CPU_HOST_PTR(p));
}
}
@ -909,8 +872,8 @@ void tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *src_cpu,
uint16_t idxmap,
unsigned bits)
{
TLBFlushRangeData d;
run_on_cpu_data runon;
TLBFlushRangeData d, *p;
CPUState *dst_cpu;
/* If all bits are significant, this devolves to tlb_flush_page. */
if (bits >= TARGET_LONG_BITS) {
@ -929,27 +892,18 @@ void tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *src_cpu,
d.idxmap = idxmap;
d.bits = bits;
if (encode_pbm_to_runon(&runon, d)) {
flush_all_helper(src_cpu, tlb_flush_page_bits_by_mmuidx_async_1, runon);
async_safe_run_on_cpu(src_cpu, tlb_flush_page_bits_by_mmuidx_async_1,
runon);
} else {
CPUState *dst_cpu;
TLBFlushRangeData *p;
/* Allocate a separate data block for each destination cpu. */
CPU_FOREACH(dst_cpu) {
if (dst_cpu != src_cpu) {
p = g_memdup(&d, sizeof(d));
async_run_on_cpu(dst_cpu, tlb_flush_page_bits_by_mmuidx_async_2,
RUN_ON_CPU_HOST_PTR(p));
}
/* Allocate a separate data block for each destination cpu. */
CPU_FOREACH(dst_cpu) {
if (dst_cpu != src_cpu) {
p = g_memdup(&d, sizeof(d));
async_run_on_cpu(dst_cpu, tlb_flush_page_bits_by_mmuidx_async_2,
RUN_ON_CPU_HOST_PTR(p));
}
p = g_memdup(&d, sizeof(d));
async_safe_run_on_cpu(src_cpu, tlb_flush_page_bits_by_mmuidx_async_2,
RUN_ON_CPU_HOST_PTR(p));
}
p = g_memdup(&d, sizeof(d));
async_safe_run_on_cpu(src_cpu, tlb_flush_page_bits_by_mmuidx_async_2,
RUN_ON_CPU_HOST_PTR(p));
}
/* update the TLBs so that writes to code in the virtual page 'addr'