| Message ID | 20241009000453.315652-10-richard.henderson@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | accel/tcg: Introduce tlb_fill_align hook | expand |
On 09.10.2024 03:04, Richard Henderson wrote: > Drop the 'else' so that ret is overridden with the > highest priority fault. > > Fixes: d8bc1381250 ("target/hppa: Implement PSW_X") > Reviewed-by: Helge Deller <deller@gmx.de> > Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Is this a qemu-stable material? For now I assume yes, please let me know if it is not. Thanks, /mjt
On 10/14/24 11:02, Michael Tokarev wrote: > On 09.10.2024 03:04, Richard Henderson wrote: >> Drop the 'else' so that ret is overridden with the >> highest priority fault. >> >> Fixes: d8bc1381250 ("target/hppa: Implement PSW_X") >> Reviewed-by: Helge Deller <deller@gmx.de> >> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> >> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > > Is this a qemu-stable material? For now I assume yes, please > let me know if it is not. The kernel fault thing is pretty nasty. Fixing that probably requires all of patches 2-11. I don't think the arm fix is serious enough to backport. r~
On 14.10.2024 22:31, Richard Henderson wrote: > On 10/14/24 11:02, Michael Tokarev wrote: >> On 09.10.2024 03:04, Richard Henderson wrote: >>> Drop the 'else' so that ret is overridden with the >>> highest priority fault. >>> >>> Fixes: d8bc1381250 ("target/hppa: Implement PSW_X") >>> Reviewed-by: Helge Deller <deller@gmx.de> >>> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> >>> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> >> >> Is this a qemu-stable material? For now I assume yes, please >> let me know if it is not. > > The kernel fault thing is pretty nasty. > Fixing that probably requires all of patches 2-11. > > I don't think the arm fix is serious enough to backport. Count me confused. So, am I right you suggest picking up changes 2-11 for 9.1? It looks maybe a bit too much, no? Thanks, /mjt
diff --git a/target/hppa/mem_helper.c b/target/hppa/mem_helper.c index f027c494e2..f71cedd7a9 100644 --- a/target/hppa/mem_helper.c +++ b/target/hppa/mem_helper.c @@ -288,7 +288,7 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx, } /* - * In priority order, check for conditions which raise faults. + * In reverse priority order, check for conditions which raise faults. * Remove PROT bits that cover the condition we want to check, * so that the resulting PROT will force a re-check of the * architectural TLB entry for the next access. @@ -299,13 +299,15 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx, /* The T bit is set -- Page Reference Fault. */ ret = EXCP_PAGE_REF; } - } else if (!ent->d) { + } + if (unlikely(!ent->d)) { prot &= PAGE_READ | PAGE_EXEC; if (type & PAGE_WRITE) { /* The D bit is not set -- TLB Dirty Bit Fault. */ ret = EXCP_TLB_DIRTY; } - } else if (unlikely(ent->b)) { + } + if (unlikely(ent->b)) { prot &= PAGE_READ | PAGE_EXEC; if (type & PAGE_WRITE) { /*
Drop the 'else' so that ret is overridden with the highest priority fault. Fixes: d8bc1381250 ("target/hppa: Implement PSW_X") Reviewed-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/hppa/mem_helper.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)