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Message-ID: <3d72efd39f986ee939d068af69fdce28bd600766.1691568093.git.christophe.leroy@csgroup.eu>
Date: Wed, 9 Aug 2023 10:01:43 +0200
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>,
linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
kernel test robot <lkp@...el.com>
Subject: [PATCH] powerpc/radix: Move some functions into #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
With skiboot_defconfig, Clang reports:
CC arch/powerpc/mm/book3s64/radix_tlb.o
arch/powerpc/mm/book3s64/radix_tlb.c:419:20: error: unused function '_tlbie_pid_lpid' [-Werror,-Wunused-function]
static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
^
arch/powerpc/mm/book3s64/radix_tlb.c:663:20: error: unused function '_tlbie_va_range_lpid' [-Werror,-Wunused-function]
static inline void _tlbie_va_range_lpid(unsigned long start, unsigned long end,
^
This is because those functions are only called from functions
enclosed in a #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
Move below functions inside that #ifdef
* __tlbie_pid_lpid(unsigned long pid,
* __tlbie_va_lpid(unsigned long va, unsigned long pid,
* fixup_tlbie_pid_lpid(unsigned long pid, unsigned long lpid)
* _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
* fixup_tlbie_va_range_lpid(unsigned long va,
* __tlbie_va_range_lpid(unsigned long start, unsigned long end,
* _tlbie_va_range_lpid(unsigned long start, unsigned long end,
Fixes: f0c6fbbb9050 ("KVM: PPC: Book3S HV: Add support for H_RPT_INVALIDATE")
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202307260802.Mjr99P5O-lkp@intel.com/
Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
arch/powerpc/mm/book3s64/radix_tlb.c | 240 ++++++++++++++-------------
1 file changed, 121 insertions(+), 119 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/radix_tlb.c b/arch/powerpc/mm/book3s64/radix_tlb.c
index ce804b7bf84e..867ce8c463ee 100644
--- a/arch/powerpc/mm/book3s64/radix_tlb.c
+++ b/arch/powerpc/mm/book3s64/radix_tlb.c
@@ -127,21 +127,6 @@ static __always_inline void __tlbie_pid(unsigned long pid, unsigned long ric)
trace_tlbie(0, 0, rb, rs, ric, prs, r);
}
-static __always_inline void __tlbie_pid_lpid(unsigned long pid,
- unsigned long lpid,
- unsigned long ric)
-{
- unsigned long rb, rs, prs, r;
-
- rb = PPC_BIT(53); /* IS = 1 */
- rs = (pid << PPC_BITLSHIFT(31)) | (lpid & ~(PPC_BITMASK(0, 31)));
- prs = 1; /* process scoped */
- r = 1; /* radix format */
-
- asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
- : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory");
- trace_tlbie(0, 0, rb, rs, ric, prs, r);
-}
static __always_inline void __tlbie_lpid(unsigned long lpid, unsigned long ric)
{
unsigned long rb,rs,prs,r;
@@ -202,23 +187,6 @@ static __always_inline void __tlbie_va(unsigned long va, unsigned long pid,
trace_tlbie(0, 0, rb, rs, ric, prs, r);
}
-static __always_inline void __tlbie_va_lpid(unsigned long va, unsigned long pid,
- unsigned long lpid,
- unsigned long ap, unsigned long ric)
-{
- unsigned long rb, rs, prs, r;
-
- rb = va & ~(PPC_BITMASK(52, 63));
- rb |= ap << PPC_BITLSHIFT(58);
- rs = (pid << PPC_BITLSHIFT(31)) | (lpid & ~(PPC_BITMASK(0, 31)));
- prs = 1; /* process scoped */
- r = 1; /* radix format */
-
- asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
- : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory");
- trace_tlbie(0, 0, rb, rs, ric, prs, r);
-}
-
static __always_inline void __tlbie_lpid_va(unsigned long va, unsigned long lpid,
unsigned long ap, unsigned long ric)
{
@@ -264,22 +232,6 @@ static inline void fixup_tlbie_va_range(unsigned long va, unsigned long pid,
}
}
-static inline void fixup_tlbie_va_range_lpid(unsigned long va,
- unsigned long pid,
- unsigned long lpid,
- unsigned long ap)
-{
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_ERAT_BUG)) {
- asm volatile("ptesync" : : : "memory");
- __tlbie_pid_lpid(0, lpid, RIC_FLUSH_TLB);
- }
-
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
- asm volatile("ptesync" : : : "memory");
- __tlbie_va_lpid(va, pid, lpid, ap, RIC_FLUSH_TLB);
- }
-}
-
static inline void fixup_tlbie_pid(unsigned long pid)
{
/*
@@ -299,26 +251,6 @@ static inline void fixup_tlbie_pid(unsigned long pid)
}
}
-static inline void fixup_tlbie_pid_lpid(unsigned long pid, unsigned long lpid)
-{
- /*
- * We can use any address for the invalidation, pick one which is
- * probably unused as an optimisation.
- */
- unsigned long va = ((1UL << 52) - 1);
-
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_ERAT_BUG)) {
- asm volatile("ptesync" : : : "memory");
- __tlbie_pid_lpid(0, lpid, RIC_FLUSH_TLB);
- }
-
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
- asm volatile("ptesync" : : : "memory");
- __tlbie_va_lpid(va, pid, lpid, mmu_get_ap(MMU_PAGE_64K),
- RIC_FLUSH_TLB);
- }
-}
-
static inline void fixup_tlbie_lpid_va(unsigned long va, unsigned long lpid,
unsigned long ap)
{
@@ -416,31 +348,6 @@ static inline void _tlbie_pid(unsigned long pid, unsigned long ric)
asm volatile("eieio; tlbsync; ptesync": : :"memory");
}
-static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
- unsigned long ric)
-{
- asm volatile("ptesync" : : : "memory");
-
- /*
- * Workaround the fact that the "ric" argument to __tlbie_pid
- * must be a compile-time contraint to match the "i" constraint
- * in the asm statement.
- */
- switch (ric) {
- case RIC_FLUSH_TLB:
- __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_TLB);
- fixup_tlbie_pid_lpid(pid, lpid);
- break;
- case RIC_FLUSH_PWC:
- __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_PWC);
- break;
- case RIC_FLUSH_ALL:
- default:
- __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_ALL);
- fixup_tlbie_pid_lpid(pid, lpid);
- }
- asm volatile("eieio; tlbsync; ptesync" : : : "memory");
-}
struct tlbiel_pid {
unsigned long pid;
unsigned long ric;
@@ -566,20 +473,6 @@ static inline void __tlbie_va_range(unsigned long start, unsigned long end,
fixup_tlbie_va_range(addr - page_size, pid, ap);
}
-static inline void __tlbie_va_range_lpid(unsigned long start, unsigned long end,
- unsigned long pid, unsigned long lpid,
- unsigned long page_size,
- unsigned long psize)
-{
- unsigned long addr;
- unsigned long ap = mmu_get_ap(psize);
-
- for (addr = start; addr < end; addr += page_size)
- __tlbie_va_lpid(addr, pid, lpid, ap, RIC_FLUSH_TLB);
-
- fixup_tlbie_va_range_lpid(addr - page_size, pid, lpid, ap);
-}
-
static __always_inline void _tlbie_va(unsigned long va, unsigned long pid,
unsigned long psize, unsigned long ric)
{
@@ -660,18 +553,6 @@ static inline void _tlbie_va_range(unsigned long start, unsigned long end,
asm volatile("eieio; tlbsync; ptesync": : :"memory");
}
-static inline void _tlbie_va_range_lpid(unsigned long start, unsigned long end,
- unsigned long pid, unsigned long lpid,
- unsigned long page_size,
- unsigned long psize, bool also_pwc)
-{
- asm volatile("ptesync" : : : "memory");
- if (also_pwc)
- __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_PWC);
- __tlbie_va_range_lpid(start, end, pid, lpid, page_size, psize);
- asm volatile("eieio; tlbsync; ptesync" : : : "memory");
-}
-
static inline void _tlbiel_va_range_multicast(struct mm_struct *mm,
unsigned long start, unsigned long end,
unsigned long pid, unsigned long page_size,
@@ -1478,6 +1359,127 @@ void radix__flush_tlb_all(void)
}
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
+static __always_inline void __tlbie_pid_lpid(unsigned long pid,
+ unsigned long lpid,
+ unsigned long ric)
+{
+ unsigned long rb, rs, prs, r;
+
+ rb = PPC_BIT(53); /* IS = 1 */
+ rs = (pid << PPC_BITLSHIFT(31)) | (lpid & ~(PPC_BITMASK(0, 31)));
+ prs = 1; /* process scoped */
+ r = 1; /* radix format */
+
+ asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
+ : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory");
+ trace_tlbie(0, 0, rb, rs, ric, prs, r);
+}
+
+static __always_inline void __tlbie_va_lpid(unsigned long va, unsigned long pid,
+ unsigned long lpid,
+ unsigned long ap, unsigned long ric)
+{
+ unsigned long rb, rs, prs, r;
+
+ rb = va & ~(PPC_BITMASK(52, 63));
+ rb |= ap << PPC_BITLSHIFT(58);
+ rs = (pid << PPC_BITLSHIFT(31)) | (lpid & ~(PPC_BITMASK(0, 31)));
+ prs = 1; /* process scoped */
+ r = 1; /* radix format */
+
+ asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
+ : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory");
+ trace_tlbie(0, 0, rb, rs, ric, prs, r);
+}
+
+static inline void fixup_tlbie_pid_lpid(unsigned long pid, unsigned long lpid)
+{
+ /*
+ * We can use any address for the invalidation, pick one which is
+ * probably unused as an optimisation.
+ */
+ unsigned long va = ((1UL << 52) - 1);
+
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_ERAT_BUG)) {
+ asm volatile("ptesync" : : : "memory");
+ __tlbie_pid_lpid(0, lpid, RIC_FLUSH_TLB);
+ }
+
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
+ asm volatile("ptesync" : : : "memory");
+ __tlbie_va_lpid(va, pid, lpid, mmu_get_ap(MMU_PAGE_64K),
+ RIC_FLUSH_TLB);
+ }
+}
+
+static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
+ unsigned long ric)
+{
+ asm volatile("ptesync" : : : "memory");
+
+ /*
+ * Workaround the fact that the "ric" argument to __tlbie_pid
+ * must be a compile-time contraint to match the "i" constraint
+ * in the asm statement.
+ */
+ switch (ric) {
+ case RIC_FLUSH_TLB:
+ __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_TLB);
+ fixup_tlbie_pid_lpid(pid, lpid);
+ break;
+ case RIC_FLUSH_PWC:
+ __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_PWC);
+ break;
+ case RIC_FLUSH_ALL:
+ default:
+ __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_ALL);
+ fixup_tlbie_pid_lpid(pid, lpid);
+ }
+ asm volatile("eieio; tlbsync; ptesync" : : : "memory");
+}
+
+static inline void fixup_tlbie_va_range_lpid(unsigned long va,
+ unsigned long pid,
+ unsigned long lpid,
+ unsigned long ap)
+{
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_ERAT_BUG)) {
+ asm volatile("ptesync" : : : "memory");
+ __tlbie_pid_lpid(0, lpid, RIC_FLUSH_TLB);
+ }
+
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
+ asm volatile("ptesync" : : : "memory");
+ __tlbie_va_lpid(va, pid, lpid, ap, RIC_FLUSH_TLB);
+ }
+}
+
+static inline void __tlbie_va_range_lpid(unsigned long start, unsigned long end,
+ unsigned long pid, unsigned long lpid,
+ unsigned long page_size,
+ unsigned long psize)
+{
+ unsigned long addr;
+ unsigned long ap = mmu_get_ap(psize);
+
+ for (addr = start; addr < end; addr += page_size)
+ __tlbie_va_lpid(addr, pid, lpid, ap, RIC_FLUSH_TLB);
+
+ fixup_tlbie_va_range_lpid(addr - page_size, pid, lpid, ap);
+}
+
+static inline void _tlbie_va_range_lpid(unsigned long start, unsigned long end,
+ unsigned long pid, unsigned long lpid,
+ unsigned long page_size,
+ unsigned long psize, bool also_pwc)
+{
+ asm volatile("ptesync" : : : "memory");
+ if (also_pwc)
+ __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_PWC);
+ __tlbie_va_range_lpid(start, end, pid, lpid, page_size, psize);
+ asm volatile("eieio; tlbsync; ptesync" : : : "memory");
+}
+
/*
* Performs process-scoped invalidations for a given LPID
* as part of H_RPT_INVALIDATE hcall.
--
2.41.0
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