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Re: [PATCH v3 4/7] hw/ppc/spapr: Convert HPTE_DIRTY() macro as hpte_is_d


From: Harsh Prateek Bora
Subject: Re: [PATCH v3 4/7] hw/ppc/spapr: Convert HPTE_DIRTY() macro as hpte_is_dirty() method
Date: Thu, 19 Dec 2024 12:22:15 +0530
User-agent: Mozilla Thunderbird

Hi Philippe,

Similar issue here as with patch 2 ..

On 12/18/24 23:51, Philippe Mathieu-Daudé wrote:
Convert HPTE_DIRTY() macro as hpte_is_dirty() method.
Since sPAPR is in big endian configuration at reset,
use the big endian LD/ST API to access the HPTEs.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
  hw/ppc/spapr.c | 12 ++++++++----
  1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index b67ab1ee685..5bc49598a97 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1411,7 +1411,11 @@ static bool hpte_is_valid(SpaprMachineState *s, unsigned 
index)
      return ldq_be_p(hpte_get(s, index)) & HPTE64_V_VALID;
  }
-#define HPTE_DIRTY(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY)
+static bool hpte_is_dirty(SpaprMachineState *s, unsigned index)
+{
+    return ldq_be_p(hpte_get(s, index)) & HPTE64_V_HPTE_DIRTY;
+}
+
  #define CLEAN_HPTE(_hpte)  ((*(uint64_t *)(_hpte)) &= 
tswap64(~HPTE64_V_HPTE_DIRTY))
  #define DIRTY_HPTE(_hpte)  ((*(uint64_t *)(_hpte)) |= 
tswap64(HPTE64_V_HPTE_DIRTY))
@@ -2257,7 +2261,7 @@ static int htab_save_later_pass(QEMUFile *f, SpaprMachineState *spapr, /* Consume non-dirty HPTEs */
          while ((index < htabslots)
-               && !HPTE_DIRTY(hpte_get(spapr->htab, index))) {
+               && !hpte_is_dirty(spapr->htab, index)) {

hpte_is_dirty expects SpaprMachineState * as arg, need to update accordingly.

regards,
Harsh
              index++;
              examined++;
          }
@@ -2265,7 +2269,7 @@ static int htab_save_later_pass(QEMUFile *f, 
SpaprMachineState *spapr,
          chunkstart = index;
          /* Consume valid dirty HPTEs */
          while ((index < htabslots) && (index - chunkstart < USHRT_MAX)
-               && HPTE_DIRTY(hpte_get(spapr->htab, index))
+               && hpte_is_dirty(spapr->htab, index)
                 && hpte_is_valid(spapr->htab, index)) {
              CLEAN_HPTE(hpte_get(spapr->htab, index));
              index++;
@@ -2275,7 +2279,7 @@ static int htab_save_later_pass(QEMUFile *f, 
SpaprMachineState *spapr,
          invalidstart = index;
          /* Consume invalid dirty HPTEs */
          while ((index < htabslots) && (index - invalidstart < USHRT_MAX)
-               && HPTE_DIRTY(hpte_get(spapr->htab, index))
+               && hpte_is_dirty(spapr->htab, index)
                 && !hpte_is_valid(spapr->htab, index)) {
              CLEAN_HPTE(hpte_get(spapr->htab, index));
              index++;



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